Article
Engineering, Chemical
Bin Wang, Nana Wang, Xuewen Li, Rongfei Zhou, Weihong Xing
Summary: High-aspect-ratio SAPO-34 nanosheets were successfully fabricated by exfoliation of lamellar SAPO-34 zeolite using a solvent-mediated freeze-thaw method. The nanosheets exhibited excellent performance in CO2 permeation and CO2/CH4 selectivity when used as thin membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
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
Engineering, Chemical
Bin Wang, Weijie Huang, Yancai Zhu, Rongfei Zhou, Weihong Xing
Summary: Ultra-permeable SAPO-34 membranes with uniform thickness were successfully fabricated using diluted mother liquids. The membranes exhibited excellent separation performance and showed potential for large-scale production.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Applied
Kailu Zang, Junxia Ding, Wenna Zhang, Jindou Huang, Juanzhi Yan
Summary: This study extensively investigated the electronic structure of H-SSZ-13 and H-SAPO-34 zeolites and found that the catalytic activity of acidic zeolites is derived from the electronic distribution of their acidic catalytic centers. The acidity strength and polarization ability of the zeolites also affect their catalytic efficiency.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shinya Kokuryo, Kazuya Tamura, Koji Miyake, Yoshiaki Uchida, Atsushi Mizusawa, Tadashi Kubo, Norikazu Nishiyama
Summary: Zr-doped SAPO-34 was synthesized to enhance the catalytic activity, highlighting the significance of Lewis acidity. The highly-dispersed Zr species in Zr-doped SAPO-34 contributed to the higher catalytic activity compared to pristine or Zr-loaded SAPO-34, indicating the strong impact of highly-dispersed Zr species on the performance of SAPO-34.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Thermodynamics
Y. M. Liu, Z. X. Yuan, X. Wen, C. X. Du
Summary: This study evaluated the performance of a solar adsorption cooling system using a silica gel-water working pair, finding optimal performance at an adsorption time of 45 minutes. Comparison with a SAPO-34 zeolite-water system showed that the silica gel system outperformed at the optimal adsorption time.
APPLIED THERMAL ENGINEERING
(2021)
Article
Engineering, Environmental
Qingjin Lin, Shuang Liu, Shuhao Xu, Pan Yao, Mingming Pei, Haidi Xu, Yi Dan, Yaoqiang Chen
Summary: In this study, a catalyst with a hybrid microstructure of SAPO-34 + SSZ-39 was prepared by introducing SSZ-39 seeds, which optimized the Si distribution and enhanced the catalytic performance. Cu/(SA + SZ) catalyst exhibited more strong acidic structures and stable structures, activating NOx and improving the NH3-SCR performance. Additionally, Cu/(SA + SZ) retained the low-temperature catalytic performance and mitigated the loss of acid sites.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Ji Han, Guoju Yang, Hong Ding, Xiaoxin Chen
Summary: Fabrication of hierarchical SAPO-34 zeolites by chemical etching is a simple, cost-effective, and efficient method to overcome intrinsic diffusion limitations. The formation of hierarchical porosity through etching depends on the Si content and particle size of SAPO-34 samples. After etching, nanosized SAPO-34 zeolites with low Si content exhibit improved catalytic performance in methanol-to-olefin reactions due to enhanced mass transport and accessibility to active sites.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Engineering, Chemical
Ruizhi Chu, Bangming Yang, Yang Zhou, Jiaxin Wu, Pengcheng Li, Mingzhi Dai, Xianliang Meng, Xiao Li, Weisong Li, Guoguang Wu, Chenxiao Wang
Summary: This study explored the effect of SAPO-34 film thickness on the anti-coking performance of composite zeolite film. The results showed that a SAPO-34 film thickness of 8μm could improve the coke resistance performance of the zeolite film due to reasonable acid distribution and rich hierarchical pores. The analysis of soluble coke composition indicated that the composite zeolite film with medium-thickness SAPO-34 film had the simplest structure, providing a new idea for improving the anti-coking performance of composite materials.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Engineering, Chemical
Danni Meng, Xue Kong, Xiaoxue Tang, Wanying Guo, Senlin Yang, Ye Zhang, Heng'e Qiu, Yanfeng Zhang, Zefang Zhang
Summary: Controlling seed size effectively reduces the cost of zeolite membranes and improves CO2 permeance, resulting in thinner membranes. Ball-milling regular SAPO-34 crystals can easily generate ultra-small seed particles, aiding in reducing membrane thickness.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Hongbo Jiang, Linzhi Yuan, Defei Li, Yushi Chen
Summary: This study developed a 14-lump MTO kinetic model based on SAPO-34 catalyst, and combined it with the hydrodynamic model of the fast fluidized bed reactor in the industrial SMTO process. Selective deactivation and activity difference between spent and regenerated catalysts were considered. The validated model showed good agreement with actual values, and the sensitivity analysis indicated its usefulness in guiding industrial production operations.
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
Engineering, Chemical
Sara Ranjbaran Lodrijeh, Sima Askari, Rouein Halladj
Summary: The study demonstrates that SAPO-34 is the best catalyst for methanol-to-olefin conversion, and samples synthesized using the seed-assisted method exhibit excellent physicochemical properties. It is proved that the template plays a key role in the synthesis process.
Article
Engineering, Chemical
Diego Zapater, Javier Lasobras, Jaime Soler, Javier Herguido, Miguel Menendez
Summary: The deactivation profile of an SAPO-34-based catalyst was studied in a fixed-bed reactor, revealing the need for further research on the deactivation mechanism of SAPO-34.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Applied
Aiyong Wang, Ying Chen, Eric D. Walter, Nancy M. Washton, Tamas Varga, Yilin Wang, Janos Szanyi, Yong Wang, Charles H. F. Peden, Feng Gao
Summary: The model Cu/SAPO-34 SCR catalyst with isolated Cu(II) ions deactivates irreversibly after storage due to the attack of water molecules on active sites, leading to the formation of copper-aluminate-like species upon thermal treatment. This deactivation mechanism does not require significant degradation of the SAPO-34 support.
Article
Chemistry, Physical
Yasaman Mohtashami, Majid Taghizadeh
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Environmental Sciences
Fatemeh Shafizadeh, Majid Taghizadeh, Samaneh Hassanpour
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Engineering, Chemical
Fatemeh Yahyazadeh Saravi, Majid Taghizadeh
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Chemistry, Applied
Mohammad Darzinezhad Rami, Majid Taghizadeh, Hossein Akhoundzadeh
MICROPOROUS AND MESOPOROUS MATERIALS
(2019)
Review
Chemistry, Organic
Mahjoobeh Hajitabar Firouzjaee, Majid Taghizadeh
MINI-REVIEWS IN ORGANIC CHEMISTRY
(2020)
Article
Chemistry, Applied
Faeze Hashemi, Majid Taghizadeh, Mohammad Darzinezhad Rami
MICROPOROUS AND MESOPOROUS MATERIALS
(2020)
Review
Chemistry, Multidisciplinary
Sahebeh Alizadeh Asli, Majid Taghizadeh
Article
Green & Sustainable Science & Technology
Mohaddeseh Khakestarian, Majid Taghizadeh, Naghmeh Fallah
Summary: This study investigated the production of biodiesel from waste cooking oil and methanol using the KOH/Fe3O4@MCM-41 catalyst. The catalyst was characterized using various techniques and the effects of catalyst amount, reaction time, and alcohol to oil molar ratio on biodiesel production were studied. Optimal conditions were determined and the reaction kinetics parameters were investigated.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2022)
Review
Engineering, Chemical
Majid Taghizadeh, Saba Tahami
Summary: Metal organic frameworks (MOFs) are attracting attention as solid catalysts, with the MIL-101 family being a popular choice. They possess a large surface area, high pore volumes, and good stability, making them suitable for various catalytic reactions.
REVIEWS IN CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Mahjoobeh Hajitabar Firouzjaee, Majid Taghizadeh
Summary: In this study, mesoporous KIT-6 support was synthesized and modified with different substances to improve its structure and catalytic performance. The catalysts were characterized by various analyses and their performances were evaluated in an n-butane isomerization process. It was found that impregnation with HSiW on the mesoporous support resulted in higher conversion and selectivity, while the addition of 0.5 wt% Pt further enhanced the catalytic activity and stability. The influence of various process variables on the catalyst performance was also investigated. A classical bifunctional model was used to describe the kinetic behavior of the catalyst, providing valuable insights into the reaction mechanism.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
Naghmeh Fallah, Majid Taghizadeh
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)
Article
Engineering, Environmental
Mohammadreza Tabatabaei Shirazani, Hamid Bakhshi, Alimorad Rashidi, Majid Taghizadeh
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)
