Article
Chemistry, Applied
Li Han, Lulu Guo, Shaozong Xue, Zheng Wang, Tianliang Lu, Jun Xu, Yuzhong Zhan, Jianfeng Wang
Summary: In this study, hierarchical porous SAPO-34 zeolite with excellent catalytic properties was successfully prepared using a one-step hydrothermal synthesis method by introducing water-soluble polyacrylamide (PAM) hydrogel into the conventional SAPO-34 synthesis system. Compared to conventional microporous SAPO-34, the hierarchically structured SAPO-34 exhibited significantly longer catalytic lifetime (740 min) and improved selectivity for light olefins up to 87.5% in the MTO reaction.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Qiang Li, Wenwen Cong, Jianxia Zhang, Changyou Xu, Fang Wang, Dezhi Han, Guangjian Wang, Liancheng Bing
Summary: An efficient approach was developed for the rapid synthesis of nanosized SSZ-13 zeolite with hierarchical structure by combining additive and seed induced crystallization, significantly shortening the crystallization time. The obtained nanosized SSZ-13 exhibited abundant mesopores and could be further regulated in crystal size. UV-Vis results showed the chelation ability of citric acid to Al ions accelerated the crystallization rate, resulting in improved catalytic performance in MTO reaction.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Chemical
Zihan Zhou, Xingwen Wang, Rongli Jiang, Xueshuai Chen, Huilin Hou
Summary: In this paper, stacked spherical hierarchical SAPO-34 zeolite with high catalytic performance was synthesized by hydrothermal crystallization. The use of composite template not only changed the morphology of the zeolite, but also greatly reduced the synthesis cost, which is of significant importance for its industrial development.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Mengheng Wang, Ziwei Wang, Suhan Liu, Runtian Gao, Kang Cheng, Lei Zhang, Guoquan Zhang, Xiaojian Min, Jincan Kang, Qinghong Zhang, Ye Wang
Summary: The integration of methanol synthesis and methanol-to-olefins conversion in a bifunctional process provides a new synthetic strategy for lower olefins. Designing matchable zeolite components remains challenging, but a hierarchical SAPO-34 zeolite with a sandglass-like structure shows promise in enhancing selectivity and stability in syngas conversion. High-pressure hydrogen and moderate density of acid sites play crucial roles in achieving high C-2-C-4(=) selectivity in the conversion process.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Pengfei Wu, Miao Yang, Jifeng Pang, Dong Fan, Lei Song, Tantan Sun, Mingyuan Zheng, Peng Tian, Tao Zhang
Summary: The synthesis of efficient and controllable SAPO-34 nanocrystallites catalyst for the conversion of biomass into 5-hydroxymethylfurfural (5-HMF) is of great significance. The obtained SAPO-34 nanocrystallites exhibited remarkable activity in the conversion of mono-, di- and poly-saccharides into 5-HMF.
Article
Chemistry, Multidisciplinary
Hua-Qin Wang, Yun-Qi Cui, Ya-Long Ding, Mei Xiang, Pei Yu, Rong-Qiang Li
Summary: Traditional SAPO-34 zeolite suffers from carbon deposition and deactivation, as well as limited catalytic conversion of bulky organic molecules. Synthesizing SAPO-34 zeolite with a mesoporous pore structure can greatly improve molecule transfer in zeolites.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Lei Guo, Weiping Zhu, Aihua Xing, Fei Li, Zhihui Guo
Summary: SAPO-34 molecular sieves with various special morphologies were successfully synthesized using mixed templates and by varying the silicon content in the gel. The acidity and morphology of the synthesized SAPO-34s were found to be affected by the silicon content. For the methanol to olefin reaction, SAPO-34 S-0.3 with suitable acidity and hierarchical structures exhibited higher selectivity to ethylene plus propylene and longer catalyst lifetime.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Green & Sustainable Science & Technology
Z. Liu, Q. Wang, S. Liu, M. Yang, D. Fan, D. Zhu, P. Tian
Summary: The large-scale industrialization of the methanol-to-olefins (MTO) process has led to a significant consumption of MTO catalyst. The conversion of spent MTO catalyst into valuable materials is important for environmental protection and the development of the MTO industry. In this study, the spent MTO catalyst was used as raw material for the synthesis of SAPO-34 and their catalytic applications. Different-sized amines were employed as synthesis templates, and high crystallinity SAPO-34 with varied Si contents could be synthesized using the reactive Si/Al/P sources in the spent MTO catalyst. Low-silica SAPO-34 exhibited good catalytic performance, and SAPO-34-DEA showed excellent catalytic performance in the methanol ammoniation reaction due to its higher acid concentration and larger crystal size.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Chemistry, Multidisciplinary
Ji Han, Guoju Yang, Yongcun Zou, Xiaoxin Chen, Valentin Valtchev
Summary: Hierarchical SAPO-34 zeolites were successfully synthesized using a crystal etching strategy based on metastability, resulting in improved diffusion and accessibility to active sites within the micropores. The hierarchical characteristics of the etched SAPO-34 were found to be dependent on the crystallization-dissolution process controlled by synthesis temperature and time. Complementary characterization methods provided insights into the textural properties and chemical environments of framework atoms, leading to enhanced catalytic performance in the methanol-to-olefin reaction compared to microporous counterparts. This approach can be extended to tailor the properties of other zeolite types.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Chemistry, Applied
Arash Mahdavi Fard, Sima Askari, Ali Afshar Ebrahimi, Amir Heydarinasab
Summary: In this study, SAPO-34 molecular sieve was synthesized using rice husk as the silica source, which achieved a purity of 97%. The sample synthesized with a Si = 0.6 M concentration and hydrothermal synthesis at 200 degrees C for 18 h showed the highest crystallinity and selectivity towards light olefins. Additionally, using methanol/water as feed increased the selectivity of light olefins.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Applied
Baorong Wang, Peixin Rui, Xinheng Cai, Xianqing Xie, Weilin Liao, Yibin Luo, Xingtian Shu
Summary: This study investigates the co-feeding of methanol from stripper units to enhance the ethylene selectivity in the conventional FCC process. The results show that the use of SAPO-34 catalyst under specific conditions can significantly improve the yield of ethylene and light olefins.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Wenhe Yu, Xiaowen Wu, Bohao Cheng, Tianyi Tao, Xin Min, Ruiyu Mi, Zhaohui Huang, Minghao Fang, Yangai Liu
Summary: SAPO-34 zeolite is known for its excellent form selection and controllability in the chemical industry, but easily generates carbon deposition leading to deactivation. To improve catalytic performance, reducing crystal size or introducing secondary macropores to form a hierarchical structure is essential.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Applied
Chao Sun, Aijuan Zhao, Yaquan Wang, Ziyang Wang, Jingjing Zhao, Taotao Zhao, Wenrong Liu, Mingxue Shi, Jiaxin Lu, Shuhui Wu, Lingzhen Bu
Summary: The hierarchical SAPO-34 aggregates were synthesized with the assistance of organosilane TPED and using morpholine as the template. Different amounts of TPED led to varying morphologies, compositions, and acid properties of the resulting aggregates. The addition of TPED played a pivotal role in the formation of hierarchical SAPO-34 aggregates, which exhibited significant improvement in methanol to olefin reaction compared to conventional SAPO-34.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Zihan Zhou, Rongli Jiang, Xueshuai Chen, Xingwen Wang, Huilin Hou
Summary: This paper successfully synthesized a hierarchical lamellar H-ZSM-5 zeolite with excellent catalytic performance for methanol to olefin conversion, using urea and PEG2000 as synthesis materials, providing an energy-efficient and eco-friendly synthesis strategy.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Peixin Rui, Baorong Wang, Feibiao Chen, Yanjuan Xiang, Jianming Yang, Tao Guo, Zheng Wu, Weilin Liao, Xingtian Shu
Summary: The fabrication of intracrystalline secondary pores is crucial for enhancing the catalytic performance of microporous zeolites. A two-step crystallization process using AlPO4 was found to be effective in synthesizing hierarchical SAPO-34 with abundant intracrystalline secondary porosity in a short period of time, leading to improved MTO activity and selectivity.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Ning Wang, Qiming Sun, Tianjun Zhang, Alvaro Mayoral, Lin Li, Xue Zhou, Jun Xu, Peng Zhang, Jihong Yu
Summary: Supported metal catalysts prepared using impregnation method often suffer from poor dispersion and thermal stability. In this study, it was demonstrated that self-pillared MFI zeolite nanosheets are ideal supports for immobilizing ultrasmall metal clusters, exhibiting excellent catalytic performance in various reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Review
Chemistry, Multidisciplinary
Qiming Sun, Ning Wang, Jihong Yu
Summary: Zeolite-supported metal catalysts have shown superior activity and thermal stability in catalytic reactions, being widely applied in hydrogenation, dehydrogenation, oxidation, and other reactions, with promising prospects for future advancements.
ADVANCED MATERIALS
(2021)
Article
Physics, Applied
Vivienne Wells, Asim Riaz, Qiming Sun, Xian Li, Ning Yan, Chi-Hwa Wang, Wojciech Lipinski
Summary: This study demonstrated the reforming of methane to produce synthesis gas using bimetallic catalysts. The catalysts showed good activity and stability during dry reforming, and the syngas production via reduction-oxidation cycling was found to be insignificant.
APPLIED PHYSICS LETTERS
(2022)
Article
Green & Sustainable Science & Technology
Boshu Jiang, Qiming Sun, Bachirou Guene Lougou, Hao Zhang, Xian Li, Zhibin Qu, Yong Shuai, Chi-Hwa Wang
Summary: Solar-driven thermochemical CO2 conversion is an effective approach for achieving carbon peaking and carbon neutrality. Finding suitable materials remains a key challenge. This study investigated the characteristics of solar thermochemical CO2-splitting using CuO, NiFe2O4, and SiC. The newly synthesized composite material consisting of 25%CuO and 75%NiFe2O4 on SiC support showed higher catalytic activity for CO2-splitting.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2022)
Article
Engineering, Chemical
Yali Zhang, Kai Zhang, Chao Shang, Xiaoning Wang, Lei Wu, Guoqing Huang, Hao Wang, Qiming Sun, Xiao Dong Chen, Zhangxiong Wu
Summary: In this study, uniform and hierarchically macro/mesoporous ZSM-5 microspheres were successfully synthesized using a facile and green strategy combining spray-freeze drying and steaming-assisted crystallization. The hierarchical ZSM-5 catalyst exhibited superior catalytic performance in the methanol-to-olefin conversion reaction, with a prolonged lifetime and improved selectivity to ethylene and propylene compared to conventional microporous ZSM-5 and nano-sized ZSM-5.
Article
Chemistry, Physical
Bachirou Guene Lougou, Boxi Geng, Boshu Jiang, Hao Zhang, Qiming Sun, Yong Shuai, Zhibin Qu, Jiupeng Zhao, Chi-Hwa Wang
Summary: This study proposes an interface/substrate engineering approach to improve CO2-splitting and thermochemical energy conversion. By coating CuFe2O4 and Co3O4 layers on SiC, the reactive surface area of the material is increased, and inter-layer oxygen exchanges are facilitated by a stable SiC-Co3O4 layer. The remarkable thermochemical performances are attributed to the synergistic effect between CuFe2O4 and Co3O4 layers and stoichiometric reaction characteristics.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Gokalp Gozaydin, Qiming Sun, Myungwon Oh, Songhyun Lee, Minkee Choi, Yue Liu, Ning Yan
Summary: In this study, a method for hydrolyzing untreated chitin using low-cost and recyclable zeolites in a LiBr solution was reported. SAPO-34 and SSZ-13 zeolites showed superior performance. The work establishes a pathway for chitin hydrolysis using solid heterogeneous catalysts.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Yali Meng, Qinghao Sun, Tianjun Zhang, Jichao Zhang, Zhuoya Dong, Yanhang Ma, Zhangxiong Wu, Huifang Wang, Xiaoguang Bao, Qiming Sun, Jihong Yu
Summary: A step-by-step reduction strategy was developed to synthesize small-sized bimetallic species supported on various metal oxide supports. The introduction of Co species significantly enhanced the catalytic activity of noble metals (e.g., Pt, Rh, Ru, and Pd) in ammonia borane hydrolysis reactions. The optimized Pt0.1%Co3%/TiO2 catalyst showed a high turnover frequency (TOF) value and outperformed monometallic Pt/TiO2 and commercial Pt/C catalysts in terms of H2 generation rate and stability.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Caiyi Chen, Xiaoli Wang, Boju Pan, Weiqiao Xie, Qing Zhu, Yali Meng, Zhuofeng Hu, Qiming Sun
Summary: In this study, an in situ and on-demand strategy for hydrogen peroxide (H2O2) generation was developed using a cascade water electrolysis and heterocatalysis system. The system achieved a high H2O2 generation rate of 0.85 mol L-1 h(-1) g(Pd)(-1) by utilizing efficient zeolite-encaged ultrasmall Pd catalysts. The confinement effect of zeolites not only promoted the formation of highly dispersed metal species for H2O2 generation, but also inhibited H2O2 decomposition, increasing the production yield of H2O2. The findings provide a new avenue for H2O2 generation through a highly efficient electrolysis-heterocatalysis system using zeolite-supported metal catalysts.
Article
Chemistry, Multidisciplinary
Qingyun Kang, Mingyu Chu, Panpan Xu, Xuchun Wang, Shiqi Wang, Muhan Cao, Oleksandr Ivasenko, Tsun-Kong Sham, Qiao Zhang, Qiming Sun, Jinxing Chen
Summary: Catalytic reactions inside mesoporous channels show significant improvements in chemical upcycling of waste plastics. The design of p-Ru/SBA catalyst allows for the conversion of polyethylene into high-value liquid fuels, exhibiting remarkable catalytic activity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Kai Zhang, Ning Wang, Yali Meng, Tianjun Zhang, Pu Zhao, Qiming Sun, Jihong Yu
Summary: This article presents a facile and energy-efficient method for synthesizing zeolite-encaged pseudo-single atom catalysts. These catalysts demonstrate excellent activity and stability in various reactions, such as methane combustion, hydrogen generation, and Cr(VI) reduction. The results highlight the potential importance of zeolite-encaged pseudo-single atom catalysts in efficient hydrogen storage and pollutant disposal applications.
Article
Chemistry, Multidisciplinary
Jiafu Li, Kai Zhang, Ning Wang, Qiming Sun
Summary: This review provides a comprehensive summary of the state-of-the-art synthetic strategies and applications of zeolite-encaged single-atom metal catalysts, as well as future perspectives on the challenge and opportunity for this subject.
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
(2022)
Article
Chemistry, Physical
Weiyu Wang, Qiming Sun, Qiang Wang, Shenhui Li, Jun Xu, Feng Deng
Summary: The investigation on rhodium-containing silicalite-1 zeolites using the HET-PHIP NMR technique reveals that the supported rhodium species and zeolite structure play crucial roles in molecule polarization and signal enhancement. Intensive polarized signals are observed on self-pillared silicalite-1 nanosheets supported rhodium catalyst, while silicalite-1 nanocrystals supporting large rhodium nanoparticles show lower activity for the generation of polarization. Single-atom rhodium encaged in silicalite-1 nanocrystals exhibits high hydrogenation activity but low observed polarization generation efficiency, indicating the critical role of the interactions between polarized molecules and micropore structures in attenuating the polarization.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Review
Chemistry, Inorganic & Nuclear
Ziqiang Qu, Qiming Sun
Summary: This review summarizes the latest research progress in zeolite-supported metal catalysts for propane dehydrogenation (PDH) reactions, including synthesis methods, catalytic mechanisms, and structure-function relationships. It provides references and insights for the future design of highly efficient zeolite-supported metal catalysts for PDH applications.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Hongyue Zhang, Jiancong Liu, Bolun Wang, KaiKai Liu, Guangrui Chen, Xiaowei Yu, Jiyang Li, Jihong Yu
MATERIALS CHEMISTRY FRONTIERS
(2020)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
