Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Engineering, Environmental
Qiang Sun, Hongxia Gao, Teerawat Sema, Zhiwu Liang
Summary: This study compared the CO2 desorption performance of different Si/Al ratios of HZSM-5 zeolites and successfully synthesized hierarchical HZSM-5 with higher catalytic activity. The results showed that desilication by modification in sodium hydroxide could significantly improve the mesoporous surface area and enhance CO2 desorption capacity. These findings are important for improving catalyst design in CO2 capture technology.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Songbo He, Kenny Zuur, Dian Sukmayanda Santosa, Andre Heeres, Chuncheng Liu, Evgeny Pidko, Hero Jan Heeres
Summary: Catalytic conversion of pure glycerol to bio-aromatics (bio-BTX) was successfully achieved using un-modified H-ZSM-5 catalyst, with coke deposition leading to catalyst deactivation. An oxidative regeneration procedure was applied to remove coke and reactivate the catalyst, showing potential for industrial application.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Chemistry, Multidisciplinary
Xinqiang Wu, Yingxu Wei, Zhongmin Liu
Summary: The methanol-to-hydrocarbons (MTH) process provides a new route for obtaining basic chemicals without relying on oil resources. The reaction reflects the dynamic assembly process of C-C bonds in zeolite catalysts' confined microenvironment. Advanced in situ spectroscopy and computational chemistry methods have helped capture and understand the details of reactants, intermediates, and products, and model the reaction steps at the molecular and atomic levels. The concept of dynamic catalysis provides insights into complex catalytic mechanisms and structure-activity relationships in MTH chemistry.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Chemistry, Physical
Haifeng Tian, Jiapeng Jiao, Fei Zha, Xiaojun Guo, Xiaohua Tang, Yue Chang, Hongshan Chen
Summary: In this study, a ZnZrO solid solution and Zn/Z5 composite catalyst were synthesized and characterized for the hydrogenation of CO2 to aromatics, resulting in improved efficiency and selectivity. Various reaction conditions and catalyst properties were investigated, leading to insights on enhancing the catalytic performance.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Applied
Zixuan Ma, Xiaoxing Wang, Xiaoling Ma, Minghui Tan, Guohui Yang, Yisheng Tan
Summary: This study investigated the direct conversion of syngas into aromatics using bifunctional catalysts coupling ZnCrOx oxides and H-ZSM-5 zeolites with different morphologies. The results showed that the CO conversion was affected by the Bronsted acid sites, and the combination of acidity and particle size influenced the aromatics selectivity and distribution. Different morphologies of H-ZSM-5 zeolites had different effects on the transfer of intermediate species and side reactions, leading to variations in the aromatics selectivity. TPAOH treatment on a specific H-ZSM-5 zeolite promoted olefins cyclization and increased the aromatics selectivity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Ryota Osuga, Takashi Takeuchi, Masato Sawada, Yusuke Kunitake, Takeshi Matsumoto, Shuhei Yasuda, Hiroaki Onozuka, Susumu Tsutsuminai, Junko N. Kondo, Hermann Gies, Toshiyuki Yokoi
Summary: The sheet-like AEI-type aluminosilicate zeolites synthesized by the CGI-assisted method showed improved catalytic performance in the direct conversion of propene to butenes compared to conventional samples. The sheet-like morphology enhanced molecular diffusivity and led to a higher selectivity for iso-butene. Additionally, the distribution of Bronsted acid sites could be controlled by increasing the external surface area from the sheet-like particles.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Byeong Jun Jeong, Min Chang Shin, Jung Hoon Park, Byung Hun Jeong, Hong Joo Lee, Seung Hwan Lee, Edoardo Magnone
Summary: This study provides the first detailed description of the endothermic catalytic reaction of methylcyclohexane over H-ZSM-5 zeolites and activated charcoals under supercritical conditions using a multichannel micro-reactor. The results show that the ultra-compact structure of the MR significantly enhances the reaction efficiency compared to conventional tube reactors.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Review
Biotechnology & Applied Microbiology
Ifeanyi Michael Smarte Anekwe, Yusuf Makarfi Isa, Bilainu Oboirien
Summary: Bioethanol, derived from biomass resources, is increasingly used as a base material for the synthesis of petrochemicals and fuel. This article provides a comprehensive review of the catalytic conversion of bioethanol into hydrocarbons, such as olefins and gasoline. It also highlights the need for further research to address challenges and enhance bioethanol conversion for improved biofuel and chemical production.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Lei Wu, Huijuan Su, Xun Sun, Libo Sun, Lijun Zhao, Caixia Qi
Summary: The yield of propylene in fluidized catalytic cracking can be improved by modifying ZSM-5 with external surface modification method and Au nanoparticles. Among the catalysts studied, the 0.2 wt% Au/ZSM-5-1%TOS catalyst showed the best performance with high propylene selectivity and feedstock conversion, even after water vapor treatment at high temperature. It has great potential in petrochemical processes.
Article
Chemistry, Multidisciplinary
Liying Zeng, Fei Liu, Tianxiang Zhao, Jianxin Cao
Summary: A ZSM-5@gamma-Al2O3 composite catalyst with a core-shell structure was proposed for the high-efficiency cocatalytic conversion of a methanol-ethanol system to light olefins. The catalyst prepared by liquid-phase precipitation coating showed excellent catalytic performance, with high conversion rates of methanol and ethanol, as well as selectivity and yield of light olefins. Introduction of ethanol into methanol enhanced the selectivity of light olefins as target products, with distinct Bronsted-Lewis acid synergistic active centers formed in the composite catalyst.
Article
Energy & Fuels
Haifeng Tian, Jiapeng Jiao, Haizhou Tian, Huanhuan He, Fei Zha, Xiaojun Guo, Xiaohua Tang, Yue Chang
Summary: Methanol to aromatics (MTA) is an effective method to produce aromatics through a non-petroleum route, with the acidity and structure of zeolite catalysts being key factors. Different preparation methods and Zn sources significantly influenced the products distribution in the MTA reaction. Steam-assisted crystallization method was found to improve the crystallinity and pore structure of the ZnZ8 catalyst.
Article
Chemistry, Multidisciplinary
Jing Ma, Kai Hidaka, Masaru Ogura, Takahiko Moteki
Summary: In this study, a structure-catalytic performance relationship between the Al distribution in ZSM-5 zeolite and the behavior of the methanol-to-olefins reaction, particularly in regard to propylene formation, was experimentally demonstrated.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Engineering, Chemical
Toyin Omojola
Summary: The conversion of methanol over ZSM-5 catalysts and the mechanism involved were studied in this research. It was found that dimethyl ether served as a major surface oxygenate and a source of surface methoxy species. The activity of the catalyst can be improved by optimizing and selectively tuning the active sites during the conversion of methanol to olefin(s).
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Li Lin, Xiaoyang He, Xia-Guang Zhang, Wenchao Ma, Biao Zhang, Diye Wei, Shunji Xie, Qinghong Zhang, Xiaodong Yi, Ye Wang
Summary: A powerful Bi2S3-derived catalyst has been developed that can produce a large amount of formic acid with high selectivity. The catalyst is composed of a nanocomposite of Bi-0 clusters and Bi2O2CO3 nanosheets, and operando spectroscopic and theoretical studies have revealed the pivotal role of the Bi-0-Bi2O2CO3 interface in CO2 activation and conversion.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Jun Feng, Sha Xu, Hao Du, Qiaobin Gong, Shunji Xie, Weiping Deng, Qinghong Zhang, Ye Wang
Summary: This paper discusses the recent advances in the photocatalytic conversion of methanol into high-value chemicals, highlighting the differences between photocatalysis and thermocatalysis, as well as the key factors influencing catalytic performance. The challenges and opportunities of methanol conversion are also explored.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Limei Wang, Yu Sun, Fuyong Zhang, Jingting Hu, Wentao Hu, Shunji Xie, Yongke Wang, Jun Feng, Yubing Li, Genyuan Wang, Biao Zhang, Haiyan Wang, Qinghong Zhang, Ye Wang
Summary: Despite numerous studies on photocatalysis, there has been limited success in using semiconductors to synthesize industrially important bulk chemicals. However, this study successfully designed and fabricated single-atom rhodium-doped nanorods, which showed record-breaking efficiencies in producing ethylene glycol, a key bulk chemical used for polyester manufacturing, through photocatalysis.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Lei Zeng, Wei Li, Xueer Wei, Jiawei Cheng, Wei Zhou, Yanping Zheng, Fan Cai, Yuefeng Liu, Kang Cheng, Qinghong Zhang, Ye Wang
Summary: The industrial catalysts for alkane dehydrogenation to olefins often deactivate quickly due to coking and sintering. In this study, iridium, a rarely used noble metal for C-H activation, was used to create an ultra-stable IrGa/Al2O3 catalyst for propane dehydrogenation (PDH). A synergetic effect between metallic Ir and GaOx was discovered, leading to high PDH activity and propylene selectivity. The Ir0.5Ga2/Al2O3 catalyst exhibited 98% propylene selectivity at a 19% propane conversion at 550 degrees C and 86% propylene selectivity at a 35% propane conversion at 600 degrees C. The IrGa/Al2O3 catalyst demonstrated stable PDH performance for 100 hours after deactivation. Its catalytic performance is comparable to Pt-based catalysts, making the Ir-based catalyst promising for dehydrogenation reactions.
Review
Chemistry, Multidisciplinary
Wanfu Zhong, Wenhao Huang, Sunhong Ruan, Qinghong Zhang, Ye Wang, Shunji Xie
Summary: The electrochemical coupling of CO2 reduction and organic conversion reaction has gained increasing attention in recent years due to its potential in reducing reaction overpotential and obtaining value-added chemicals. This review comprehensively summarizes the research progress in coupling electrolysis, including co-electrolysis of CO2 and organics at the cathode, replacement of traditional anodic oxygen evolution reaction (OER), and joint transformation of CO2 and organics in a membraneless electrolytic cell. We hope that the examples and insights presented in this review can inspire further exploration and innovation in this direction.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Applied
Kai Zhang, ZiXiang Zhan, Minzhi Zhu, Haiwei Lai, Xiangyang He, Weiping Deng, Qinghong Zhang, Ye Wang
Summary: This article introduces an efficient electrocatalytic system using nickel oxide (NiO) and TEMPO or ACT as catalysts, which selectively oxidize key bio-platform molecules such as glucose, xylose, and 5-hydroxymethylfurfural (HMF) into corresponding dicarboxylic acids. NiO catalyzes the oxidation of aldehyde to carboxylic acid, while TEMPO or ACT oxidizes primary alcohol to aldehyde. The combination of NiO and TEMPO or ACT significantly accelerates the tandem oxidation of aldehyde and hydroxyl groups, achieving excellent yields (83%-99%) of dicarboxylic acids. Moreover, the combination catalyst enables the selective oxidation of glucose and xylose with high concentrations, offering a promising strategy for biomass valorization.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Huizhen Zhang, Wanfu Zhong, Qiaobin Gong, Pengfei Sun, Xiaozhen Fei, Xuejiao Wu, Sha Xu, Qinghong Zhang, Gang Fu, Shunji Xie, Ye Wang
Summary: We constructed a solar-energy-driven redox cycle using iron ions as catalysts for the combination of CH4 conversion and H2 production. A photo-driven iron-induced reaction system was developed, which showed high efficiency in the selective coupling of CH4, benzene, and cyclohexane under mild conditions. Mechanistic studies revealed that CH4 coupling was induced by hydroxyl radical generated by photo-driven intermolecular charge migration of an Fe3+ complex. The produced Fe2+ was used to reduce the potential for electrolytic H2 production and then turned back into Fe3+, forming an energy-saving and sustainable recyclable system.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Wangyang Wang, Wei Zhou, Yuchen Tang, Weicheng Cao, Scott R. Docherty, Fangwei Wu, Kang Cheng, Qinghong Zhang, Christophe Coperet, Ye Wang
Summary: Gold nanoparticles dispersed on mordenite efficiently catalyze the selective oxidation of methane to methanol by molecular oxygen in aqueous medium in the presence of carbon monoxide. The methanol productivity reaches 1300 mu mol g(cat) (-1) h(-1) or 280 mmol g(Au) (-1) h(-1) with 75% selectivity at 150 degrees C, outperforming most catalysts reported under comparable conditions. Both hydroxyl radicals and hydroperoxide species participate in the activation and conversion of methane, while the lower affinity of methanol on gold mainly accounts for higher methanol selectivity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Editorial Material
Chemistry, Applied
Weiping Deng, Ye Wang
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Xinru He, Ying Guo, Jingzheng Zhang, Shuangli Yang, Jiawei Chen, Shurong Li, Shunji Xie, Ye Wang, Cheng Wang
Summary: In this study, researchers loaded bismuth into a Zr-based MOF and found that even moderate conductivity of the nanosized MOFs can support high catalytic current density for CO2 reduction to formate. This finding simplifies catalyst design and improves understanding of MOF electrocatalysis.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Xuejiao Wu, Huizhen Zhang, Shunji Xie, Ye Wang
Summary: The development of direct routes for catalytic functionalization of methane is important for utilizing this abundant carbon resource. However, the selective transformation of methane remains challenging due to the activation of inert C-H bonds and the protection of vulnerable target products. This article focuses on the insights into catalytically active sites/species and offers strategies to facilitate selective methane conversions. Future opportunities for photocatalytic methane conversions are also discussed.
Review
Chemistry, Physical
Weiping Deng, Yunchao Feng, Jie Fu, Haiwei Guo, Yong Guo, Buxing Han, Zhicheng Jiang, Lingzhao Kong, Changzhi Li, Haichao Liu, Phuc T. T. Nguyen, Puning Ren, Feng Wang, Shuai Wang, Yanqin Wang, Ye Wang, Sie Shing Wong, Kai Yan, Ning Yan, Xiaofei Yang, Yuanbao Zhang, Zhanrong Zhang, Xianhai Zeng, Hui Zhou
Summary: This review article focuses on the state-of-the-art catalytic transformation of lignocellulosic biomass into value-added chemicals and fuels, including the conversion of cellulose, hemicellulose, and lignin, as well as the gasification and pyrolysis of whole biomass. The opportunities, challenges, and prospects of woody biomass valorization are highlighted.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Applied
Sunhong Ruan, Biao Zhang, Jinhan Zou, Wanfu Zhong, Xiaoyang He, Jinhai Lu, Qinghong Zhang, Ye Wang, Shunji Xie
Summary: A highly efficient catalyst for electrocatalytic CO2 reduction reaction (CO2RR) to formate under high CO2 pressures was reported. The catalyst exhibited high formate selectivity and activity, and the grain boundaries played a vital role in promoting the CO2RR process. The charge redistribution at the grain boundaries of Bi surface contributed to the enhanced CO2 activation and improved stability of HCOO* intermediate.
CHINESE JOURNAL OF CATALYSIS
(2022)
Review
Chemistry, Physical
Wei Wang, Yao Wang, Zixiang Zhan, Tian Tan, Weiping Deng, Qinghong Zhang, Ye Wang
Summary: This review article focuses on the selective deoxygenation of cellulose and its derived platforms such as glucose and 5-hydroxymethyl furfural (HMF) to produce valuable chemicals. The review highlights recent progress made in this area and discusses efficient catalytic systems and reaction mechanisms. The knowledge gained from this research can contribute to the rational design of effective strategies and catalysts for the utilization of lignocellulosic biomass in the future.
ACTA PHYSICO-CHIMICA SINICA
(2022)
Article
Chemistry, Physical
Hui Chen, Wei Li, Mingchao Zhang, Wangyang Wang, Xian-Hua Zhang, Fa Lu, Kang Cheng, Qinghong Zhang, Ye Wang
Summary: In this study, a multifunctional Pt-Zn@H-ZSM-5 catalyst with a unique structure was reported, which exhibited excellent performance in the propane dehydroaromatization reaction. The catalyst enhanced the dehydrogenation of propane and suppressed side reactions, leading to a significant increase in the yield of aromatics.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
