Article
Chemistry, Multidisciplinary
Zhijuan Zeng, Liu Yang, Xiaoting Zhu, Wenguang Zhao, Xianxiang Liu, Zexing Huang, Qiong Xu, Wenzhou Zhong
Summary: Co/N-C catalysts prepared by solvothermal crystallization method demonstrate high catalytic activity for the synthesis of 2,5-dimethylfuran. The excellent catalytic activity is attributed to the highly dispersed Co nanoparticles in the porous structure.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Applied
Tingwei Zhang, Haiying Wei, Rongxin Ling, Yongcan Jin, Huining Xiao, Wenzhi Li, Farzad Seidi
Summary: In this study, silica-tin oxide composites and a H3PO4 modified 20SiSnO were synthesized and evaluated for the catalytic dehydration of glucose to 5-hydroxymethylfurfural. The catalysts showed high efficiency, stability, and recyclability, achieving inspiring yields of HMF. The possible reaction pathways of glucose dehydration over the catalysts were also discussed.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Indri Yati, Jisong Kang, Haeun Noh, Hyunah Choo, Jae-Wook Choi, Dong Jin Suh, Jeong-Myeong Ha
Summary: This study focuses on the catalytic production of high-carbon-number diesel fuels from xylose-derived 2-methylfuran and butanal. Different catalysts including silica-alumina and sulfated zirconia were prepared and their activities were evaluated. The resulting deoxygenated hydrocarbons showed potential as bio-aviation fuels.
Article
Energy & Fuels
Masoumeh Khanchi, Seyed Mohammad Ali Mousavian, Saeed Soltanali
Summary: The experimental results show that SiO2-Al2O3-based catalysts perform better than SiO2 and Al2O3-based catalysts, with the best performance observed at lower Si/Al ratios.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Applied
R. P. Borges, L. G. Moura, S. Kanitkar, J. J. Spivey, F. B. Noronha, C. E. Hori
Summary: The study found that the silica molar content in Ni/CeO2-SiO2 catalyst significantly affects its performance, with higher silica content leading to larger surface area and smaller Ni crystallite size. Silica content also influences the metal-support interaction, ceria dispersion, and reducibility. Experimental results showed that Ni75CS catalyst performed the best during propane steam reforming.
Article
Chemistry, Inorganic & Nuclear
Kun Sun, Ge Yang, Jiaxin Han, Yongming Chai, Yanpeng Li, Chunzheng Wang, Svetlana Mintova, Chenguang Liu, Hailing Guo
Summary: A composite catalyst consisting of sulfur-tolerant Ni/Al2O3@SOD and MoS2/Al2O3 was developed for the hydrodesulfurization of dibenzothiophene. The catalyst showed high catalytic activity and selectivity, making it a promising option for desulfurization applications.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Zhijian Li, Changhui Zhu, Haiyong Wang, Yuan Liang, Haosheng Xin, Song Li, Xiaohong Hu, Chenguang Wang, Qi Zhang, Qiying Liu, Longlong Ma
Summary: A new process for the selective hydrodeoxygenation of 5-HMF to 2,5-DMF coupled with WGSR using a single catalyst, Au/ZrO2, was reported in this study. The process achieved a 78.5% yield of 2,5-DMF with a H-2 utilization efficiency of 88.2%. This method is of great significance and challenges, offering potential application in the conversion of cellulosic biomass to value-added chemicals and fuels.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Energy & Fuels
Venkata D. B. C. Dasireddy, Blaz Likozar
Summary: This study prepared bimetallic Cu/Fe-based catalysts for the oxidation of methane to methanol, with HT Cu-Fe/Al2O3 exhibiting the highest activity. The catalytic process relied on metal atom dispersion and showed a direct chemosynthesis of alcohol, which was influenced by the oxidant molecule type used.
Review
Energy & Fuels
Muhammad Amirul Aiman Bin Abdul Rani, Nabila A. Karim, Siti Kartom Kamarudin
Summary: Studies have shown that by using different types of catalysts and adjusting parameters, high yield and selectivity of HMF synthesis can be achieved.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Paper & Wood
Ajay Kumar, Arvind Singh Chauhan, Shaifali, Pralay Das
Summary: The study developed a one-pot process for converting lignocellulosic biomass and carbohydrates into 5-HMF with a optimized production scale of 0.5 kg. The process was also extended to waste raw potato, corn powder, starch, glucose, and fructose conversion into 5-HMF with high specificity and conversion rates.
Article
Chemistry, Multidisciplinary
Mahmood Andache, Mehran Rezaei, Zohre Taherkhani
Summary: This article synthesized nanocrystalline gamma-alumina with high surface area and mesoporous structure as a carrier for Ni catalysts, which showed improved efficiency and stability in steam reforming of methane. The incorporation of MgO in nickel catalyst further enhanced the resistance to carbon deposition and catalytic activity, resulting in high stability of the promoted catalyst.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Chemistry, Physical
Jiangang Lv, Di Wang, Xuefeng Guo, Weiping Ding, Weimin Yang
Summary: High-energy facets exposed nanotubular alumina and conventional alumina supported Pd catalysts were synthesized and applied to selective hydrogenation of phenylacetylene. The novel alumina supported catalyst exhibited higher selectivity at complete conversion of phenylacetylene, which can be attributed to the well dispersion of Pd and strong metal-support interaction resulting from the unique structural properties of the crystal plane regulated alumina. It facilitates the creation of more active sites for hydrogenation, while promoting the desorption of alkenes and suppressing excessive hydrogenation towards ethylbenzene.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Nathalia Ramirez Bocanegra, Javier Rivera De la Rosa, Carlos J. Lucio Ortiz, Pablo Cubillas Gonzalez, Hugh Chris Greenwell, Veronica E. Badillo Almaraz, Ladislao Sandoval Rangel, Brenda Alcantar-Vazquez, Vicente Rodriguez-Gonzalez, David Alejandro De Haro Del Rio
Summary: This study focuses on preparing FAU-type zeolites with various Si/Al ratios and crystallization times to enhance surface area properties. Bimetallic Pd-Ru and Pt-Ru were loaded onto the zeolite matrix, and the interaction between the properties of zeolitic support and the metallic species, specifically Pd, positively affected the catalytic process. Lower Si/Al ratios favored catalytic activity, and longer crystallization times improved surface area and crystallinity.
Article
Energy & Fuels
Emir Zafer Hosgun
Summary: The study investigated the catalytic production of 5-HMF and FF from poppy stalks in water medium under hydrothermal conditions using various metal chlorides, with CuCl2, CrCl3, and AlCl3 showing the highest yields. Optimal conditions for 5-HMF and FF production were found to be at 200 degrees C, using 0.03 M CuCl2 for 30 minutes.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Inorganic & Nuclear
Shaofeng Xiong, Xiaona Liu, Zhigang Shen, Zhongting Hu, Hongyun Yang, Jian Hao, Jinjun Cai, Jie Yang
Summary: A sulfur vacancy-rich Zn3In2S6/Bi2MoO6 heterojunction photocatalyst was developed for the selective oxidation of biomass-derived molecules and the production of H-2. The catalyst exhibited outstanding performance and could contribute to the development of new technologies for biomass resource utilization.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Marion Eternot, Nadine Essayem
Summary: This study compares the ability of supercritical ethanol and supercritical n-heptane to fractionate wood and investigates the impact of adding heterogeneous catalysts on fractionation and light chemicals formation.
Article
Chemistry, Physical
Shenglu Lu, Yaxuan Jing, Shengchao Jia, Mohsen Shakouri, Yongfeng Hu, Xiaohui Liu, Yong Guo, Yanqin Wang
Summary: The influence of Ru chemical state on the positions of C-C bond cleavage was investigated. Positively charged Ru species were found to favor the hydrogenolysis of the internal C-secondary-C-secondary bond, inhibiting methane production. A Ru/CeO2-I catalyst with plenty of Ru delta+ species was designed and proved efficient for the hydrogenolysis of real waste polyethylene plastics. This work will guide catalyst design to enhance the selective production of liquid alkanes.
Article
Chemistry, Physical
Tao Tong, Mark Douthwaite, Lu Chen, Rebecca Engel, Matthew B. Conway, Wanjun Guo, Xin-Ping Wu, Xue-Qing Gong, Yanqin Wang, David J. Morgan, Thomas Davies, Christopher J. Kiely, Liwei Chen, Xi Liu, Graham J. Hutchings
Summary: The physicochemical properties of Pt/CeO2 catalysts were varied to investigate their impact on the hydrogen-borrowing amination of alcohols. It was found that the Pt precursor and CeO2 support properties strongly influenced catalytic performance. The most active catalyst exhibited linearly structured Pt species, which were more effective for the rate-determining step of cyclopentanol dehydrogenation compared to Pt clusters and nanoparticles. This study not only provides insights into desirable catalytic properties for hydrogen-borrowing amination but also has broader relevance to related fields.
Article
Chemistry, Physical
Antonio de Brito S. Neto, Alcineia C. Oliveira, Shashank Mishra, Nadine Essayem
Summary: Nanostructured Nb-doped TiO2 was synthesized using a novel Sol-Gel method with N-methyldiethanolamine-modified precursors. The introduction of atomically dispersed Nb cation and small Nb oxo clusters within the TiO2 matrix was achieved through co-hydrolysis of Ti(IV) and Nb(V) precursors. Characterizations revealed decreased crystallinity and increased defects and BET surface areas of the TiO2 nanoparticles with Nb doping. Nb doping resulted in increased acidity and basicity, as demonstrated by gas phase calorimetry of NH3 and CO2 adsorption. The aqueous phase dihydroxyacetone conversion was significantly enhanced over Nb/TiO2 compared to undoped TiO2, with the base-catalyzed pathway becoming the prevailing mechanism with increasing Nb doping.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Physical
Roua Ben Salem, Thibaut Cornier, Pascal Bargiela, Benedicte Lebeau, Shashank Mishra, Nadine Essayem
Summary: Fluorinated zirconia catalysts with high F content were prepared by exchanging commercial zirconium oxo/hydroxide with trifluoracetic acid. The insertion of F species inhibited the basicity of zirconia and generated Bronsted acidity. This led to changes in selectivity observed in gas phase isopropanol conversion and selective aqueous phase dihydroxyacetone conversion. Additionally, fluorine atoms increased the hydrophobicity of the catalyst's surface.
Article
Engineering, Chemical
Chuang Liu, Jun Liang, Duozheng Ma, Xiangcheng Li, Liyuan Li, Yu Wang, Tiezhu Zhang, Wenhua Fu, Zhendong Wang, Weimin Yang
Summary: ZSM-22 zeolite nanosheets (F-ZSM-22, U-ZSM-22) with controlled orientation and thickness less than 20 nm were successfully synthesized through hydrothermal crystallization by introducing NaF or urea. The presence of both NaF and urea resulted in a narrower zeolite nanosheet (FU-ZSM-22). All ZSM-22 nanosheets exhibited enhanced diffusion properties compared to conventional ZSM-22 (C-ZSM-22). In the methanol-to-hydrocarbon reaction, ZSM-22 nanosheets showed better stability than C-ZSM-22, and FU-ZSM-22 demonstrated the highest catalytic performance.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Shengchao Jia, Zupeng Chen, Yaxuan Jing, Yanqin Wang
Summary: The synthesis of primary amines through reductive/hydrogen-borrowing amination is of great importance in the chemical industry. This Perspective focuses on the challenge of balancing hydrogenations of primary imine versus Schiff base and ammonolysis versus hydrogenation of Schiff base in order to enhance catalytic performance. Insights into promoting the ammonolysis of Schiff base through understanding structure-activity relationships and reaction mechanisms are discussed, and future directions for research are provided.
Article
Chemistry, Multidisciplinary
Hao Zhou, Kepeng Song, Yong Guo, Xiaohui Liu, Yanqin Wang
Summary: In this study, the depolymerization of lignocellulosic biomass was achieved under mild conditions, producing lignin phenolic monomers with nearly theoretical yield. A new method for the demethoxylation of lignin oil to obtain 4-propylphenol was developed using the RuNi/NiAl2O4 catalyst and without exogenous hydrogen. The hint of hydrogen generated by water splitting on the Ni surface promoted the removal of methoxy groups. The formation of a Ru-NiOx interface improved the activation of C-O bonds. With optimized conditions, a high yield of 17.0 wt% 4-propylphenol was obtained from birch lignin oil. This strategy utilizes structural hydrogen in lignin oil for the production of 4-propylphenol, offering a promising approach for lignin oil upgrading.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Hao Zhou, Xiaohui Liu, Yong Guo, Yanqin Wang
Summary: An innovative SCF method using Pt/NiAl2O4 catalyst was developed to convert lignocellulosic biomass into lignin oils and cellulose-rich pulps without exogenous hydrogen under mild conditions. The process utilizes structural hydrogens in hemicellulose as a hydrogen source and achieves a theoretical yield of phenolic monomers (46.6 wt %) with 90% cellulose intact in birch sawdust. This H-2-free process can be extended to other biomass and shows good stability and recyclability of the catalyst.
Article
Chemistry, Applied
Duozheng Ma, Xiangcheng Li, Chuang Liu, Caroline Versluis, Yingchun Ye, Zhendong Wang, Eelco T. C. Vogt, Bert M. Weckhuysen, Weimin Yang
Summary: Zeolites have played important roles in industrial catalysis, but have shown limited efficiency in the conversion or production of bioderived chemicals. In this study, a new aluminosilicate zeolite named SCM-36 was synthesized, which showed better catalytic performance and recyclability.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Xi Ding, Yunfeng Yang, Zhaoyang Li, Peitao Huang, Xiaohui Liu, Yong Guo, Yanqin Wang
Summary: In this study, we successfully improved the activity and stability of nickel catalyst for dry reforming of methane (DRM) by introducing cerium into Ni/MgO catalyst. The doping of cerium enhanced the reducibility of NiOx species, reduced Ni particle size, and increased oxygen vacancies, leading to improved performance of the catalyst.
Article
Chemistry, Physical
Songlei Mo, Yong Guo, Xiaohui Liu, Yanqin Wang
Summary: The glycolysis of polyethylene terephthalate (PET) is considered the most promising PET recycling strategy. The study found that catalyst activity is positively correlated with acid amount, but species with strong oxygen affinity lower activity. Among several metal-doped catalysts, 4Ti/SBA-15 with abundant Lewis acid sites exhibits excellent PET glycolysis ability and stability, making it a potential catalyst for industrial application.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Bo Feng, Yong Guo, Xiaohui Liu, Yanqin Wang
Summary: A multi-phase hydrothermal treatment system was developed to transform PVC plastic waste into benzene. It was found that the addition of a good solvent for PVC and layered solid additives helped increase the benzene yield.
Article
Chemistry, Multidisciplinary
Jia Wang, Jianchun Jiang, Xinyue Dong, Yiyun Zhang, Xiangzhou Yuan, Xianzhi Meng, Guowu Zhan, Lei Wang, Yanqin Wang, Arthur J. Ragauskas
Summary: The COVID-19 pandemic has led to increased plastic waste, but a new technology called catalytic cascade vapor-phase hydrotreatment offers a solution by upcycling mixed plastic waste into drop-in fuels. This technology has a high energy efficiency and can be used for different types of personal protective equipment (PPE) plastic waste. It reduces the global warming potential compared to conventional fuel blends and has the potential to contribute to a sustainable plastic circular economy.
Article
Chemistry, Physical
Baorun Ma, Hongxin Pan, Fan Yang, Xiaohui Liu, Yong Guo, Yanqin Wang
Summary: The Cu-based/SiO2 nanocatalysts with Cu-0 or Cu+ species as active sites were prepared and investigated. Only Cu+ species were found on the surfaces of both catalysts, and synergism between Cu+ species and ZnO was observed on the 10CuO-2ZnO/S-1 catalyst, which played a crucial role in the CO2 hydrogenation process.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Zi-Ye Liu, Qian-Yu Wang, Ji-Ming Hu
Summary: In this study, a layered carbon dot composite catalyst (NiFe LDH@CDs) was prepared using a one-step coprecipitation method, without the need for heating or hydrothermal treatment. The CD-functionalized catalyst facilitated rapid charge transfer and accelerated the oxygen evolution reaction. Additionally, the heterojunction structure formed between NiFe LDH and CDs efficiently suppressed photoelectron-hole recombination.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Rohit Kumar, Ankit Kumar Srivastava, Palaniyappan Nagarasu, Vedichi Madhu, Ekambaram Balaraman
Summary: We designed and synthesized a NN-CoII bidentate complex and used it for the amination of alcohols under mild and solventless conditions. The complex exhibited good reactivity towards both primary and sterically hindered secondary alcohols, providing high yields of amines. The pyrazole moiety in the ligand played a crucial role in the reaction. Furthermore, we demonstrated the reusability of the complex as a homogeneous cobalt catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shivanand Chettri, Liang-Ting Wu, Sagarmani Rasaily, Debesh Sharma, Bikram Gurung, Rajani Dewan, Sudarsan Tamang, Jyh-Chiang Jiang, Anand Pariyar
Summary: Replicating the enzymatic surface microenvironment in vitro is challenging, but constructing an analogous model could facilitate our understanding of surface effects and aid in developing an efficient bioinspired catalytic system. In this study, five unique Cu2O morphologies were generated, and the surface morphology variations were found to be a consequence of differences in the exposure of low-index facets. The reactivity of Cu2O was found to be influenced by the proportion of {110} planes, with r-Cu2O exhibiting the highest reactivity.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Yong Tang, Jianhao Qiu, Dingliang Dai, Guanglu Xia, Lu Zhang, Jianfeng Yao
Summary: Defect engineering has been shown to improve the photocatalytic performance. This study investigated the use of defect-rich UiO-66-NH2 wrapped by ZnIn2S4 as a catalyst for photocatalytic H2O2 production. The defects in UiO-66-NH2 enhanced O-2 adsorption and charge separation, leading to higher H2O2 yield. The insights from this work can advance the research in defect engineering of MOFs and photocatalytic H2O2 synthesis.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Ruiyang Qu, Shuxin Mao, Jana Weiss, Vita A. Kondratenko, Evgenii V. Kondratenko, Stephan Bartling, Haifeng Qi, Annette-Enrica Surkus, Kathrin Junge, Matthias Beller
Summary: The hydrogenation of amides, a challenging reaction usually performed at high temperatures, has been achieved under milder conditions using a new Pt-MoOx/TiO2 catalyst. This catalyst system enables the selective hydrogenation of various amides and imides.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Xiaoran Niu, Ao Wang, Lei Tong, Lei Wang, Yuan Kong, Chenliang Su, Hai-Wei Liang
Summary: This study introduces a novel intermetallic PdCu3 catalyst supported on defective nanodiamond-graphene (ND@G), which exhibits high selectivity (95%) and remarkable activity (turnover frequency: 2940 h(-1)), six times higher than that of the commercial Lindlar catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Review
Chemistry, Physical
Zhiyuan Zheng, Yiming Yue, Hongying Zhuo, Qinggang Liu, Yanqiang Huang
Summary: This review presents the recent research advances on single-atom catalysis for deep reduction of CO2. Detailed introductions and summaries were classified into three categories based on proton-coupled multi-electron transfer approaches: strengthening metal-support interaction, rational design and regulation of coordination environment, and development of SACs with multi-atom active sites. The challenges and future research directions in the field of SACs for CO2 reduction are also proposed.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shiv Kumar, Paramita Datta, Anup Bhunia, Swadhin K. Mandal
Summary: This article reports a transition-metal-free process for in situ denitrogenation of tosylhydrazones, resulting in the production of various sulfones. The authors used a phenalenyl-based odd alternant hydrocarbon as a photoredox catalyst, which acted as a potent oxidant to facilitate the denitrogenation reaction. The method showed wide functional-group tolerance and high yields, making it suitable for late-stage modification of natural products.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
L. A. Luque-Alvarez, J. Gonzalez-Arias, F. Romero-Sarria, T. R. Reina, L. F. Bobadilla, J. A. Odriozola
Summary: Currently, the production of acetic acid through the carbonylation reaction of methanol has limitations, leading to the exploration of alternative methods using heterogeneous catalysts. This study investigates the methanol carbonylation reaction over a Cu-H-MOR catalyst and proposes a reaction mechanism based on the catalytic behavior and performance of the catalyst. The results provide insights into the reaction mechanism and the involvement of acid and redox centers.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)