Article
Chemistry, Inorganic & Nuclear
Yu-Dong Shan, Song-Hai Wu, Yu-Le Wang, Cong Wang, Shao-Qi Zhi, Yong Liu, Xu Han
Summary: Cu-doped mesoporous TiO2 (Cu-MT) was successfully synthesized and found to have high reactivity towards the selective oxidation of cyclohexane to cyclohexanol/cyclohexanone (KA-oil), achieving a conversion of 16.8% and selectivity of 98.0% under mild conditions with a low PS/cyclohexane ratio of 1:1. The importance of moderately activated persulfate (PS) in the selective oxidation of C-H bonds was revealed.
INORGANIC CHEMISTRY
(2023)
Article
Engineering, Chemical
Jian Jian, Dexing Yang, Peng Liu, Kuiyi You, Weijie Sun, Hu Zhou, Zhengqiu Yuan, Qiuhong Ai, Hean Luo
Summary: A highly efficient and stable hydrotalcite-derived Cu-MgAlO catalyst was developed for the partial oxidation of cyclohexane. The catalyst showed excellent catalytic activity in promoting the decomposition of cyclohexyl hydroperoxide into a mixture of cyclohexanol and cyclohexanone.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Review
Nanoscience & Nanotechnology
Guangxin Xue, Linlin Yin, Shengxian Shao, Guodong Li
Summary: Phenol is an important platform molecule for synthesizing valuable chemical intermediates and products. The selective hydrogenation of phenol towards cyclohexanone or cyclohexanol has attracted great interest, but industrial application remains challenging. This review summarizes recent progress in selective hydrogenation of phenol with different catalysts, discussing the relationship between active components, support type, and catalyst performance, as well as the possible reaction mechanism and scale-up methods. Potential challenges and future developments of metal nanocatalysts for selective hydrogenation of phenol are also proposed.
Article
Chemistry, Multidisciplinary
Liming Zhai, Bin Zhang, Haojie Liang, Huibin Wu, Xinchun Yang, Gen Luo, Shichao Zhao, Yong Qin
Summary: Selective deposition of highly-dispersed FeOx into the micropore of ZSM-5 by atomic layer deposition (ALD) led to the design of efficient catalysts for high selectivity in cyclohexanone synthesis. Fe-O-Si species exhibited higher turnover frequency and stability in the oxidation reaction.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Tomoaki Matsumoto, Kenta Hoshi, Ikumi Koyama, Naoya Morohashi, Tetsutaro Hattori
Summary: The crystals of 1,3-diaminocalix[4]arene selectively include cyclohexanone over cyclohexanol. X-ray analysis and thermogravimetric analysis demonstrate that the inclusion of cyclohexanone is more stable and favorable compared to cyclohexanol. The preferential inclusion of cyclohexanone is amplified by the inhibition of cyclohexanol inclusion by intermolecular hydrogen bonding in a non-polar solvent.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
Senpei Peng, David Chadwick
Summary: Nanostructured MnWO4 catalysts with different initial pH values exhibited varying activity in the selective oxidation of cyclohexane. The ratio of Mn to W surface sites increased with higher initial pH, and these surface sites showed different activities in various reaction steps of the oxidation reaction.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Kuan Wang, Bing Xue, Jun-Lei Wang, Zhen-Hong He, Song-Song Li, Dan Wang, Wei-Tao Wang, Yang Yang, Zhao-Tie Liu
Summary: A composite photocatalyst for the photocatalytic oxidation of cyclohexane to cyclohexanone was successfully constructed and demonstrated desired performance under simulated solar light. Compared to pure TiO2, the composite catalyst showed higher catalytic activity, selectivity, cycling durability, and recoverability. The enhanced performance was attributed to N-doping for visible-light absorption and the p-n heterointerface for fast separation of photoformed electron-hole pairs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Engineering, Chemical
Trent F. Parker, Yufeng Quan, Benjamin A. Wilhite, Qingsheng Wang
Summary: In this study, the suitable operating regions for cyclohexanone synthesis were determined using response surface methodology, aiming to minimize heat release and maximize product yields. The results revealed that reaction temperature played the most significant role in both heat release and cyclohexanone yield.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Yongping Gan, Min Huang, Fei Yu, Xing Yu, Zhanjun He, Jin Liu, Tiejun Lin, Yuanyuan Dai, Qiang Niu, Liangshu Zhong
Summary: Light-driven methane conversion to methanol with high selectivity was achieved using Cu/CeO2 catalysts with CO2 as a soft oxidant. The catalyst showed a high selectivity of 96.2% and a high yield of 88.9 mu mol g-1 h-1 for methanol production. Oxygen vacancies in the catalyst facilitated electron trapping and reduced carrier recombination, while CO2 acted as a soft oxidant and accelerated methanol formation.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Environmental
Sonu Bhandari, Suresh Chandra Andola, Anil Chandra Kothari, Deepak Khurana, Shivani Singh, Mukesh Kumar Poddar, Tuhin Suvra Khan, Takehiko Sasaki, V. V. D. N. Prasad, Rajaram Bal
Summary: The challenge for heterogeneous catalysis is to develop robust catalysts that can activate molecular oxygen from air and selectively oxidize cyclohexane without producing unwanted by-products or leaching metal. In this study, we synthesized a nanosized CoWO4@W18O49 catalyst with oxygen vacancy sites, which achieved-24% cyclohexane conversion with-93% KA oil selectivity under solvent-free conditions. DFT studies showed that the CoWO4@W18O49 surface required -15.8 kJ/mol of energy for oxygen vacancy generation, significantly lower than the CoWO4 (111) and W18O49 (010) surfaces. The exceptional catalytic activity of CoWO4@W18O49 is attributed to the active CoWO4 and W18O49 interfaces, which have redox sites and abundant vacancies of oxygen.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Siddaramagoud Bandalla, Vijaykumar Dosarapu, Ganesh Babu Bathula, Madhu Ravula, Jyothi Yadagiri, Parikshit Gogoi, Mallesham Baithy, Sreekantha B. Jonnalagadda, Chandra Shekar Vasam
Summary: An efficient and reusable heterogeneous catalyst for the production of cyclohexanone from cyclohexanol oxidation under solvent-free conditions was developed using inexpensive solid-base CaO-MgO binary metal oxides. Through various characterization techniques, the 1CaO-1.5MgO catalyst showed higher conversion and superior selectivity.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Guang Xu, Ying Zhang, Dandan Peng, Donghai Sheng, Ye Tian, Di Ma, Yao Zhang
Summary: Nitrogen-doped anatase/rutile mixed-phase TiO2 photocatalysts with carbonaceous species were successfully fabricated using pyrolyzing and nitrogen doping, showing excellent photocatalytic performance. The optimized ratio of the catalyst exhibited significantly higher production yield compared to other samples, attributed to the enhanced visible-light absorption, effective separation of electron-hole pairs, and unique functions of carbonaceous species and porous structure.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Applied
Fei Ge, Haihong Xia, Jing Li, Xiaohui Yang, Minghao Zhou, Jianchun Jiang
Summary: In this work, core-shell Cox@C@Ni catalysts were prepared and applied to catalyze the conversion of guaiacol to cyclohexanol. The catalysts showed better performance compared to Co@C catalyst. The optimal condition achieved nearly 100% conversion of guaiacol and 90% selectivity of cyclohexanol at 220 degrees C for 2 hours using isopropanol as the hydrogen donor solvent. The structure, composition, and acidity of the catalysts played a significant role in the hydrodeoxygenation reaction, and the reaction mechanism was deduced based on product distributions and physicochemical properties.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Physical
Chih-Huang Weng, Chong-Yi Liao, Jing-Hua Tzeng, Ying-Chen Chen, Jin Anotai, Yao-Tung Lin
Summary: Developing oxygen vacancies in nanomaterials is an effective method to enhance catalytic performance. In this study, a novel low-cost ternary iron-manganese-copper mixed oxide catalyst with abundant oxygen vacancies was successfully synthesized. Characterization analyses revealed the metal valence transformation, synergy structure, and role of oxygen vacancies in the catalyst, demonstrating its excellent catalytic oxidation performance. The stable and active structure of the catalyst after oxidizing ethylene suggests a redox cycle of catalytic mechanism. This work provides valuable insights into the development of high-performance and stable catalysts with abundant oxygen vacancies for VOCs elimination.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Chemical
Saeed Hasannia, Mohammad Kazemeini, Abdolvahab Seif
Summary: This study reports the successful development of an efficient and green approach for producing cyclohexanone oxime through a solvent-free oxidative conversion reaction using rGO-based modified WO3 catalyst. The presence of hydroxyl groups on rGO surface was found to play a crucial role in the absorption and activation of cyclohexylamine. Under optimized conditions, a total conversion of 81% with a selectivity towards cyclohexanone oxime of 86% was achieved. Density Functional Theory analysis confirmed the synergistic effect between Co and rGO components in enhancing the reactivity of both cyclohexylamine and molecular oxygen.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Jian Xu, Yuan Shu, Qian Xia, Yang-Long Guo, Guo-Jun Zhou, Wang-Cheng Zhan
Summary: Recent studies have shown that manipulating the adsorption of oleylamine on nanoparticle surfaces can control particle interactions and enhance aggregative growth processes. This leads to faster nucleation rates and higher uniformity of nanoparticles in a shorter time period. Additionally, Ag nanoparticles supported on TiO(2) have demonstrated remarkable catalytic performance in the reduction of 4-nitrophenol.
Article
Materials Science, Multidisciplinary
Wen-Chao Hua, Ming-Qi Li, Yang-Long Guo, Guang-Tao Chai, Hao Liu, Yun Guo, Li Wang, Wang-Cheng Zhan
Summary: A series of Co3O4 catalysts prepared by different methods showed varying catalytic activity for the combustion of VCM emissions, with the Co-AP catalyst demonstrating the best performance without producing any chlorinated by-products.
Article
Materials Science, Multidisciplinary
Xin Guo, Xue-Quan Sun, Yun Guo, Yang-Long Guo, Yun-Song Wang, Li Wang, Wang-Cheng Zhan
Summary: Au-Cu bimetallic nanoparticles were synthesized using wet chemistry method and supported on SiO2 to prepare the catalyst for selective oxidation of propene to acrolein. The bimetallic catalyst showed significantly enhanced catalytic performance compared to monometallic Au and Cu catalysts. The presence of CuO can promote the adsorption of O-2 and the electron transfer from Au to Cu facilitates the adsorptions of oxygen and propene, resulting in high catalytic activity.
Article
Chemistry, Physical
Hao Liu, Xian Li, Qiguang Dai, Hailin Zhao, Guangtao Chai, Yanglong Guo, Yun Guo, Li Wang, Wangcheng Zhan
Summary: The reducibility and surface acidity of Mn-Ti composite oxides were controlled by adjusting the Mn/Ti molar ratio, impacting their catalytic activity for the deep oxidation of vinyl chloride. It was found that the catalyst surface acidity played a decisive role in the oxidation process, while Lewis acidic sites from Ti species also influenced the catalytic activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Qiguang Dai, Kai Shen, Wei Deng, Yuanpu Cai, Jiaorong Yan, Jinyan Wu, Limin Guo, Rui Liu, Xingyi Wang, Wangcheng Zhan
Summary: Bulk metal doping and surface phosphate modification synergistically enhance the catalytic performance of CeO2 catalysts for the oxidation of Cl-VOCs, suppressing the formation of polychlorinated byproducts and improving surface structural stability.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Hailin Zhao, Bingjing Tang, Jie Tang, Yafeng Cai, Yao Cui, Hao Liu, Li Wang, Yunsong Wang, Wangcheng Zhan, Yanglong Guo, Yun Guo
Summary: It was found that depositing Pt on Na+ ion-exchanged ZSM-5 can enhance the catalytic efficiency of Pt/Na-ZSM-5 catalyst for formaldehyde oxidation, and tuning the surface acidity/basicity and noble metal state can reduce the usage of noble metal.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Guangtao Chai, Sineng Pan, Yanglong Guo, Wangcheng Zhan, Li Wang, Yun Guo, Haifeng Wang
Summary: Co3O4 has been widely studied as a catalyst for the oxidation of chlorinated volatile organic compounds due to its excellent oxidative ability. This study used first-principles calculations to explore the catalytic oxidation process of vinyl chloride on different surfaces of Co3O4. The results show that oxygen vacancy and adjacent Co-5c sites play important roles in the cleavage of the C-Cl bond on Co3O4(110) and Co3O4(001) surfaces, respectively. The identification of the rate-determining step in VC oxidation and the preference for HCl as the chlorine-containing product provide insights for improving the performance of Co3O4 catalysts in CVOC oxidation.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Engineering, Environmental
Kai Shen, Biao Gao, Hangqi Xia, Wei Deng, Jiaorong Yan, Xiaohan Guo, Yanglong Guo, Xingyi Wang, Wangcheng Zhan, Qiguang Dai
Summary: In this study, a Ru/Pi-CeO2 catalyst was designed to enhance the catalytic oxidation of chlorinated volatile organic compounds (Cl-VOCs) and inhibit the formation of more toxic polychlorinated byproducts. The doping of oxy-anionic salts was found to suppress the production of polychlorinated byproducts, leading to improved activity and durability for DCM oxidation. This research provides valuable insights into the inhibition of polychlorinated byproducts and the development of monolithic catalysts with superior resistance to chlorine poisoning.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Yaxi Sun, Fan Ye, Jiajia Ding, Jinxia Li, Yun Guo, Li Wang, Yanglong Guo, Sheng Dai, Wangcheng Zhan
Summary: The study focuses on developing a highly efficient Ru-CeO2 catalyst for propane oxidation by adjusting the Ru loading to achieve a better balance between RuOx species in the CeO2 bulk and on the surface. By improving the distribution of active sites and increasing oxygen vacancies, the Ru-CeO2 catalyst shows enhanced catalytic activity and durability, making it a promising candidate for industrial applications.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Environmental
Zhenpeng Huang, Shiying Cao, Jihang Yu, Xuan Tang, Yanglong Guo, Yun Guo, Li Wang, Sheng Dai, Wangcheng Zhan
Summary: This study demonstrates that phosphorus modification can enhance the catalytic performance of Pt/CeO2 catalyst in the total oxidation of light alkane by modulating its acidity and redox property. Phosphorus modification increases the acidity and the ability of the catalyst to activate C-H bond, while partially restoring its redox property.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Shi-Ying Cao, Fan Ye, Ni-Ni Zhang, Yang-Long Guo, Yun Guo, Li Wang, Sheng Dai, Wang-Cheng Zhan
Summary: This study demonstrates the successful design of a bimetallic Ru-Pt catalyst for methane oxidation, which exhibits excellent stability and outstanding performance. The RuO2 species provides additional oxygen species to facilitate the redox cycle of the PtOx species, enhancing the catalyst's activity.
Article
Nanoscience & Nanotechnology
Chuntao Shao, Jie Yang, Yang You, Xuan Tang, Jie Tang, Li Wang, Yao Cui, Wangcheng Zhan, Yanglong Guo, Yun Guo
Summary: This study reports the promoting effects of doped WOx on Pt/ZrO2 catalysts for propane oxidation. It is found that doped WOx can be highly dispersed on t-ZrO2 and form a nanolayer structure. This structure produces additional strong acid sites and metallic Pt sites, which facilitate the propane oxidation reaction. The results highlight the design of efficient Pt/ZrO2 catalysts for the removal of VOCs by changing the crystal structure of the ZrO2 support.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Environmental
Zhenpeng Huang, Jiajia Ding, Xinwei Yang, Hao Liu, Peiyao Song, Yanglong Guo, Yun Guo, Li Wang, Wangcheng Zhan
Summary: This study demonstrates that the Pt catalyst supported on Nb2O5 exhibits efficient catalytic activity in propane oxidation, surpassing most catalysts reported in the literature. The Pt/Nb2O5 catalyst maintains excellent activity and durability even under harsh working conditions, making it a promising catalyst for the catalytic oxidation of alkanes from industrial sources.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Nini Zhang, Xiangmei Li, Yanglong Guo, Yun Guo, Qiguang Dai, Li Wang, Wangcheng Zhan
Summary: Crystal engineering of metal oxide supports is a new strategy to enhance the catalytic performance of noble metal catalysts in catalytic oxidation of CVOCs. Pt catalysts on different crystal phases of TiO2 exhibited varying activity, selectivity, and stability in the oxidation of DCE, with the Pt/TiO2-P catalyst showing optimal performance. The strong interaction between Pt and P25-TiO2, as well as the presence of abundant hydroxyl groups, contributed to the stability and high activity of the Pt/TiO2-P catalyst.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Chemical
Xuan Tang, Ming Wang, Bingjing Tang, Yunkun Zhao, Wangcheng Zhan, Yanglong Guo, Li Wang, Sheng Dai, Yun Guo
Summary: Realizing the potential benefits of nanoscale metal catalysts requires controlling their local environment and achieving highly dispersed active sites. In this study, we developed a catalyst synthesis route that targets the deposition of Pd near highly dispersed ZrOx on ZSM-5 zeolite using electrostatic interactions. The heteroatom Pd-ZrOx species formed in the zeolite catalysts were characterized by various techniques, revealing higher dispersion and lower oxygen coordination of Pd species, which enhanced the catalytic performance with a lower temperature for CH4 conversion. Our work provides a strategy to engineer highly dispersed noble metal species and regulate the local environment for tuning catalytic properties.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)
