Article
Chemistry, Applied
C. Garcia-Mendoza, C. E. Santolalla-Vargas, Luis G. Woolfolk, P. del Angel, J. A. de los Reyes
Summary: The research found that high acidity is beneficial for demethylation, while medium acidity may promote the cleavage of the aromatic-OCH3 bond. The higher the titania content, the stronger the catalyst's ability to produce completely deoxygenated compounds.
Article
Chemistry, Physical
Penghui Yan, Eric Kennedy, Michael Stockenhuber
Summary: Ni-Fe catalysts prepared by different impregnation techniques were studied for their activity in the hydrodeoxygenation of guaiacol and hydrogenation of toluene. The study found that the ratio of Ni/Fe significantly influences the hydrodeoxygenation activity, with a catalyst having a Ni/Fe mass ratio of 3.3 exhibiting the highest performance.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Mengting Chen, Qifeng Zhong, Meihua Zhang, Hao Huang, Yingxin Liu, Zuojun Wei
Summary: In this study, a RuMn/Al2O3-SiO2 multifunctional catalyst was prepared and efficiently converted lignin-derived phenols into cyclohexanol through aqueous partial hydrodeoxygenation (HDO). The high performance of the RuMn/Al2O3-SiO2 catalyst can be attributed to the synergistic effects of highly dispersed Ru nanoparticles with small size, the microsphere structure, appropriate acid sites from Al2O3-SiO2, and acid-base sites from MnOx.
CATALYSIS COMMUNICATIONS
(2022)
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, Applied
R. Rios-Escobedo, E. Ortiz-Santos, J. A. Colin-Luna, J. N. Diaz de Leon, P. del Angel, J. Escobar, J. A. de los Reyes
Summary: This study aimed to determine the carrier effect on anisole hydrodeoxygenation on 5 wt% Ni catalysts supported on TiO2 and TiO2-ZrO2 carriers, with a Ru-doped catalyst also tested. Results showed that Ru incorporation promoted Ni reducibility and initial reaction rate, favoring benzene selectivity over Ni/TiO2. Ni/TiO2-ZrO2 exhibited higher HDO activity and enhanced acidity compared to Ni/TiO2, resulting in a fully hydrogenated compound (cyclohexane) yield.
TOPICS IN CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Qichen Wang, Mingyi Wang, Xuehao Li, Peng Liu, Chuanmin Ding, Lian Wang, Junwen Wang, Kan Zhang, Ping Liu
Summary: In this study, Ni-Fe/AC catalysts were prepared with different proportions of Ni-Fe loading for vapor phase carbonylation of ethanol to produce propionic acid. The introduction of Fe into Ni/AC formed a Ni-Fe alloy, which inhibited the sintering of the metal and improved the dispersibility of the metal particles. The synergy between Ni and Fe reduced the reduction temperature of NiO and increased the content of active centers Ni-0 on the catalyst surface. The 1Ni-1Fe/AC catalyst exhibited the highest catalytic performance, with an increase in the co-selectivity of propionic acid and ethyl propionate by 11% and a doubled space-time yield compared to the Ni/AC catalyst.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Quoc Khanh Tran, Hoang Vu Ly, Byeongwan Kwon, Seung-Soo Kim, Jinsoo Kim
Summary: The study prepared Ni/γ-Al2O3 and Fe/activated carbon catalysts for the hydrodeoxygenation (HDO) of guaiacol, showcasing different conversion rates under varying calcination temperatures and metal loadings.
Article
Energy & Fuels
Hamed Taghvaei, Ali Moaddeli, Ali Khalafi-Nezhad, Adolfo Iulianelli
Summary: Nickel modified Al-containing MCM-41 nanoparticles were synthesized with Si/Al molar ratios ranging from 10 to 60 by direct insertion of aluminum at room temperature followed by wet impregnation. The synthesized catalysts showed tunable acidity and pore diameter, with both Ni and Al playing important roles in the hydrodeoxygenation of anisole. Phenol and benzene were the major products, with the catalyst displaying high stability and activity during 600 minutes of reaction time.
Article
Engineering, Chemical
Omar U. Valdes-Martinez, Jorge Noe Diaz de Leon, Carlos E. Santolalla, Alfonso Talavera-Lopez, Hugo Avila-Paredes, Jose Antonio de los Reyes
Summary: The study investigates the impact of different supports on Ru catalysts in the HDO reaction, revealing that supports have a significant influence on the activity of different molecules, which occurs through a cooperative action between the metallic phase and the support. In the reactions of ethanol and cyclohexanol, acid properties become more relevant at higher temperatures, while the metallic function decreases as the temperature rises.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Penghui Yan, Xinxin Tian, Eric M. Kennedy, Michael Stockenhuber
Summary: This study investigates the hydrodeoxygenation (HDO) of anisole over Ni/SiO2 catalysts, and explores the correlation between catalyst properties and reaction mechanism. The results show that the Ni/SiO2 catalyst exhibits strong hydrogenolysis activity for anisole, promoting the formation of condensed-ring products.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Xinchao Wang, Peixuan Wu, Zhuangqing Wang, Leilei Zhou, Yanchun Liu, Haiyang Cheng, Masahiko Arai, Chao Zhang, Fengyu Zhao
Summary: The Cl-modified Ru/TiO2 catalyst shows higher phenol selectivity in the conversion of guaiacol, but exhibits weaker aromatic ring hydrogenation ability, resulting in slower consumption of phenol.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Ilham Faturachman, Hendris Hendarsyah Kurniawan, Rika Tri Yunarti, Robert Ronal Widjaya, Adid Adep Dwiatmoko, Yati Maryati, Nino Rinaldi
Summary: Bio-oil, a sustainable energy source, poses difficulties in direct fuel use due to its viscosities and high oxygen content. One solution is upgrading the bio-oil through hydrodeoxygenation (HDO). In this study, guaiacol was used as a bio-oil model compound in HDO reaction, utilizing TiO2-supported palladium catalysts and isopropyl alcohol as a hydrogen source. Nickel and molybdenum were added to investigate their effects on the catalyst activity.
CANADIAN JOURNAL OF CHEMISTRY
(2022)
Article
Engineering, Chemical
Nga Tran, Yoshimitsu Uemura, Thanh Trinh, Anita Ramli
Summary: In this study, the activity and stability of different metal catalysts in vapor-phase HDO process were investigated, revealing that bimetallic Pd-Co and Pd-Fe catalysts showed higher HDO yield and stability compared to monometallic catalysts, with Pd-Fe catalyst demonstrating higher stability and regeneration ability.
Article
Chemistry, Physical
Beilei Cui, Hua Wang, Qingfeng Ge, Xinli Zhu
Summary: The size of nickel particles has a significant impact on the strong metal-support interactions and hydrodeoxygenation of m-cresol. The TiOx overlayer alters the properties of nickel, enhancing deoxygenation activity. Smaller nickel particles show higher turnover frequency for hydrodeoxygenation.
Article
Chemistry, Physical
Camila A. Teles, Priscilla M. de Souza, Raimundo C. Rabelo-Neto, Alejandra Teran, Gary Jacobs, Clara Vilela Weikert, Zuy M. Magriotis, Vinicius O. O. Goncalves, Daniel E. Resasco, Fabio B. Noronha
Summary: The effect of support type on the removal of oxygenated functional groups during hydrodeoxygenation of guaiacol was investigated. Three main reaction pathways were proposed, with demethoxylation being the dominant pathway. The presence of certain support types led to further conversion of phenol, while others resulted in the detection of benzene. The strong adsorption of hydroxyl groups may inhibit the deoxygenation rates.
MOLECULAR CATALYSIS
(2022)
Article
Agricultural Engineering
Fan Wang, Chenglong Wen, Mohong Lu, Peng Zhang, Jie Zhu, Mingshi Li, Yuhua Shan, Chunshan Song
Summary: Mo2N@NC/SBA-15 catalysts with high stability and dispersion were prepared using MoCl5 and dicyandiamide as Mo and C/N sources, respectively. During the carbonization process under H2 at an elevated temperature, Mo2N was formed in situ while dicyandiamide was converted to N-doped carbon (NC). The presence of N-doped carbon species around Mo2N NPs inhibited the aggregation of Mo2N NPs, resulting in the generation of ultrafine Mo2N nanoparticles. Mo2N@NC/SBA-15 catalysts exhibited high hydro-deoxygenation activity and aromatic compound selectivity. The selectivity towards aromatic products reached 92% and guaiacol conversion reached 99% at 380 degrees C and 2 MPa.
BIOMASS & BIOENERGY
(2023)
Article
Chemistry, Applied
Debjyoti Ray, Pengxian Ye, Jimmy C. Yu, Chunshan Song
Summary: The conversion of carbon dioxide into value-added products is important for mitigating the greenhouse effect and reducing the reliance on fossil fuels. Non-thermal plasma approach shows potential as a sustainable and efficient alternative to traditional thermocatalytic routes. The combination of a catalyst and non-thermal plasma has been found to improve the selectivity and conversion of CO2 into desired products.
Article
Engineering, Environmental
Jiaming Wu, Keyan Li, Siyu Yang, Chunshan Song, Xinwen Guo
Summary: In this study, a BiOBr/Bi2WO6 S-scheme heterojunction with intimate interfacial contact was synthesized by a one-step hydrothermal method. The nanoflower morphology and the concentration of surface oxygen vacancies (SOVs) were regulated to enhance CO2 capture ability and charge transfer efficiency. The heterojunction exhibited excellent photocatalytic CO2 reduction activity without sacrificial agent and cocatalyst, surpassing most reported photocatalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Mengjiao Pei, Keyan Li, Xiangyang Li, Chunshan Song, Xinwen Guo
Summary: Iron phthalocyanine/carbon nitride (FePc/CN) hetero-junction nanosheets were prepared using calcination method and exhibited excellent activation of peroxydisulfate (PDS) for tetracycline (TC) degradation under visible light. The FePc/CN-6 heterojunction showed significant improvement in degradation rate compared to CN and FePc due to the synergistic effect of photocatalysis and PDS activation. The construction of intimate interface via pi-pi conjugation enhanced charge separation and transfer, resulting in enhanced PDS activation and photodegradation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Applied
Yu Tang, Yi Cui, Gaosheng Ren, Ke Ma, Xiaoxun Ma, Chengyi Dai, Chunshan Song
Summary: In this study, copper-mordenite zeolite (Cu-MOR) and non-thermal plasma were used to efficiently convert methane and water into methanol and hydrogen at low temperature without CO2 formation. The reaction mechanism involves the excitation of methane under plasma conditions, followed by adsorption on the Cu-2-(μ-O)(2+) active sites and facilitated formation of methanol through co-adsorption of water. However, prolonged reaction time led to the reduction of Cu-2-(μ-O)(2+) and carbon deposition on the catalyst surface, causing a decrease in catalytic activity. Nevertheless, the presence of oxygen rejuvenated the catalyst and prevented carbon deposition, maintaining the catalytic activity.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Chemical
Fei Yuan, Guanghui Zhang, Mingrui Wang, Jie Zhu, Miao Zhang, Fanshu Ding, Zening Cheng, Chunshan Song, Xinwen Guo
Summary: This study reports a series of Fe-Co bimetallic catalysts derived from Fe-Co-Mg layered double hydroxides (LDHs) with different Fe/Co ratios for converting CO2 to light olefins. The best catalyst, FeCo-9:1-LDH, showed a high selectivity of C-2-C-4(=) over 36% at a CO2 conversion higher than 40%. The catalyst can be carburized to Co-modified iron carbide (Fe5C2), which exhibits higher CO2 conversion and C-2-C-4(=) selectivity compared to the catalyst prepared by impregnating Co and Fe onto MgO support.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Jiaxing Zhang, Ajuan Zhou, Kaivalya Gawande, Guanxing Li, Shujie Shang, Chengyi Dai, Wei Fan, Yu Han, Chunshan Song, Limin Ren, Anfeng Zhang, Xinwen Guo
Article
Materials Science, Multidisciplinary
Xiaoyu He, Jiaming Wu, Keyan Li, Min Liu, Hainan Shi, Jun Du, Chunshan Song, Xiang Wang, Xinwen Guo
Summary: A direct Z-scheme 2D/2D heterojunction of ZnIn2S4/Ti-BPDC was synthesized, providing more exposed active sites and a shorter charge transfer distance for enhanced photocatalytic performance.
SCIENCE CHINA-MATERIALS
(2023)
Article
Multidisciplinary Sciences
Mingrui Wang, Peng Wang, Guanghui Zhang, Zening Cheng, Mengmeng Zhang, Yulong Liu, Rongtan Li, Jie Zhu, Jianyang Wang, Kai Bian, Yi Liu, Fanshu Ding, Thomas P. Senftle, Xiaowa Nie, Qiang Fu, Chunshan Song, Xinwen Guo
Summary: In this study, an in situ synthesized K-Co2C catalyst was developed for CO2 hydrogenation, achieving a selectivity of 67.3% for C2+ hydrocarbons. Experimental and theoretical results showed that CoO transformed into Co2C, and the stability of Co2C depended on the reaction atmosphere and the K promoter. The formation of surface C* species was facilitated by the co-action of K promoter and H2O, while the adsorption of C* on CoO was enhanced by the K promoter. The addition of H2O extended the lifetime of K-Co2C from 35 hours to over 200 hours.
Article
Chemistry, Applied
Jing Yue, Junjie Li, Min Liu, Wen Liu, Xiujie Li, Sujuan Xie, Chunshan Song, Xinwen Guo, Xiangxue Zhu
Summary: In this study, high-silica MFI zeolite was successfully prepared using a low-temperature crystallization method and seed-directed and C2H5OH filling techniques. The synthetic gel was purified to exclude impurity phases, and well-crystallized ZSM-5 samples with controllable Si/Al ratios and uniform particle sizes were obtained. The obtained high-silica MFI zeolite exhibited superior catalytic stability compared to the conventional sample during methanol-to-propylene and n-butene cracking reactions.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiaoyu He, Yujia Ding, Zhennan Huang, Min Liu, Miaofang Chi, Zili Wu, Carlo U. Segre, Chunshan Song, Xiang Wang, Xinwen Guo
Summary: A photocatalyst TiO2/Ti-BPDC-Pt with a self-grown TiO2/Ti-MOF heterojunction, selectively anchored high-density Pt single-atomic cocatalysts on Ti-BPDC, achieves photocatalytic hydrogen evolution. The intimate heterojunction efficiently separates electrons and holes in a direct Z-scheme, and Pt is selectively anchored on Ti-BPDC in the form of single atoms. The tailored TiO2/Ti-BPDC-Pt exhibits significantly enhanced activity compared to other TiO2- or MOF-based catalysts, showing the importance of the balance of two simultaneously exposed domains of heterojunctions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Jiaxing Zhang, Ajuan Zhou, Kaivalya Gawande, Guanxing Li, Shujie Shang, Chengyi Dai, Wei Fan, Yu Han, Chunshan Song, Limin Ren, Anfeng Zhang, Xinwen Guo
Summary: ZSM-5 nanosheets show promise as catalysts for diffusion-controlled catalytic reactions. In the alkylation of benzene with methanol, nanosheets with a thickness of 30 nm exhibit higher benzene conversion, xylene selectivity, and methyl selectivity, as well as a longer lifetime and lower ethylbenzene selectivity compared to nanosheets with a thickness of 300 nm. This is attributed to the shorter straight channel length, larger specific surface area, and increased mesopore volume of the nanosheets, which enhance the diffusion of reactants and products and decrease coke formation.
Review
Chemistry, Multidisciplinary
Xiaoxing Wang, Chunshan Song
Summary: This article introduces a new design approach for adsorptive CO2 capture and separation, called molecular basket sorbents (MBS), which does not require solvent heating and water evaporation, resulting in significantly reduced energy consumption and carbon capture cost. The research shows that MBS has high CO2 adsorption capacity, selectivity, kinetics, and regenerability, outperforming traditional adsorbents.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Energy & Fuels
Jiaxing Zhang, Fei Yuan, Anfeng Zhang, Guanghui Zhang, Limin Ren, Chunshan Song, Xinwen Guo
Summary: This study developed a tandem catalyst Fe-Co/HZSM-5 for the direct conversion of CO2 into gasoline fuel. The use of HZSM-5 nanosheets with short diffusion channels and appropriate acid property improved the selectivity and yield of gasoline fuel, while preventing catalyst deactivation.
Article
Engineering, Chemical
Jie Zhu, Minchen Mu, Yi Liu, Miao Zhang, Guanghui Zhang, Zening Cheng, Ben Hang Yin, Alex C. K. Yip, Chunshan Song, Xinwen Guo
Summary: This work investigates the effect of potassium (K) promoter on the carburization and oxidation of iron-based catalysts during CO2 hydrogenation. The addition of K enhances CO2 adsorption, promotes the reaction with hydrogen, and accelerates the carburization of iron phases. In addition, K prevents the oxidation of Fe5C2 during CO2 hydrogenation. The optimized iron-based catalysts exhibit high catalytic activity for CO2 conversion to olefins and long-chain hydrocarbons.
CHEMICAL ENGINEERING SCIENCE
(2023)
