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Li B, Gao J, Shao J, Geng R, Qin Z, Wang J, Fan W, Dong M. A Fine Analysis of Zn Species Structure and Distribution in Zn/ZSM-5 Catalysts by Linear Combination Fitting Analysis of XANES Spectra. Molecules 2024; 29:631. [PMID: 38338375 PMCID: PMC10856302 DOI: 10.3390/molecules29030631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
Investigating the distribution of different Zn species on Zn-containing zeolite catalysts is crucial for identifying the active sites and establishing the relationship between the catalyst's structure and its activity in the process of ethylene aromatization. By utilizing X-ray absorption near edge spectra (XANES) of various reference samples, this study employed linear combination fitting (LCF) analysis on XANES spectra of real samples to accurately measure the changes in the distribution of Zn species in Zn-containing HZSM-5 zeolites under different Zn sources and loadings. The results showed that ZnOH+, ZnO clusters, and ZnO crystalline structures coexist in Zn/HZSM-5 catalysts prepared through physical mixing and incipient wet impregnation methods. A similar trend was observed for catalysts prepared using different methods, with an increase in Zn content resulting in a decrease in the proportion of ZnOH+ and a significant increase in the amount of larger ZnO crystals. Furthermore, ZnO clusters were confined within the zeolite pores. The findings of this study established a direct correlation between the amount of ZnOH+ determined through LCF analysis and both the rate of hydrogen production and the rate of aromatics formation, providing strong evidence for the catalytic role of ZnOH+ as an active center for dehydrogenation, which plays a key role in promoting the formation of aromatics. The method of LCF analysis on XANES spectra allows for the determination of the local structure of Zn species, facilitating a more precise analysis based on the distribution of these species. This method not only provides detailed information about the Zn species but also enhances the accuracy of the overall analysis.
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Affiliation(s)
- Baichao Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Gao
- College of Chemistry and Materials, Taiyuan Normal University, Jinzhong 030619, China
| | - Jiabei Shao
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Geng
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhangfeng Qin
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Jianguo Wang
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Weibin Fan
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Mei Dong
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
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Amine-functionalized ZSM-5-supported Gold Nanoparticles as a Highly Efficient Catalyst for The Reduction of p-Nitrophenol. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Dai S, Yang Y, Yang J, Chen S, Zhu L. Recent Advances in the Seed-Directed Synthesis of Zeolites without Addition of Organic Templates. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2873. [PMID: 36014738 PMCID: PMC9415991 DOI: 10.3390/nano12162873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
Zeolites have been widely employed in fields of petroleum refining, fine chemicals and environmental protection, but their syntheses are always performed in the presence of organic templates, which have many drawbacks such as high cost and polluted wastes. In recent years, the seed-directed synthesis of zeolites has been paid much attention due to its low-cost and environmentally friendly features. In this review, the seed-directed synthesis of Al-rich zeolites with homonuclear and heteronuclear features, the seed-directed synthesis of Si-rich zeolites assisted with ethanol and the utility of seed-directed synthesis have been summarized. This review could help zeolite researchers understand the recent progress of seed-directed synthesis.
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Affiliation(s)
- Shujie Dai
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Yichang Yang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jinghuai Yang
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Shichang Chen
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Longfeng Zhu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
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Azhari NJ, Nurdini N, Mardiana S, Ilmi T, Fajar AT, Makertihartha I, Subagjo, Kadja GT. Zeolite-based catalyst for direct conversion of CO2 to C2+ hydrocarbon: A review. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.101969] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Kadja GTM, Himma NF, Prasetya N, Sumboja A, Bazant MZ, Wenten IG. Advances and challenges in the development of nanosheet membranes. REV CHEM ENG 2021. [DOI: 10.1515/revce-2021-0004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Abstract
The development of highly efficient separation membranes utilizing emerging materials with controllable pore size and minimized thickness could greatly enhance the broad applications of membrane-based technologies. Having this perspective, many studies on the incorporation of nanosheets in membrane fabrication have been conducted, and strong interest in this area has grown over the past decade. This article reviews the development of nanosheet membranes focusing on two-dimensional materials as a continuous phase, due to their promising properties, such as atomic or nanoscale thickness and large lateral dimensions, to achieve improved performance compared to their discontinuous counterparts. Material characteristics and strategies to process nanosheet materials into separation membranes are reviewed, followed by discussions on the membrane performances in diverse applications. The review concludes with a discussion of remaining challenges and future outlook for nanosheet membrane technologies.
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Affiliation(s)
- Grandprix T. M. Kadja
- Division of Inorganic and Physical Chemistry , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung , 40132 , Indonesia
- Center for Catalytic and Reaction Engineering , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung , 40132 , Indonesia
- Research Center for Nanosciences and Nanotechnology , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung 40132 , Indonesia
| | - Nurul F. Himma
- Department of Chemical Engineering , Universitas Brawijaya , Jl. Mayjen Haryono 167 , Malang 65145 , Indonesia
| | - Nicholaus Prasetya
- Research Center for Nanosciences and Nanotechnology , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung 40132 , Indonesia
- Department of Chemical Engineering , Barrer Centre, Imperial College London , Exhibition Road , London SW7 2AZ , UK
| | - Afriyanti Sumboja
- Material Science and Engineering Research Group , Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung , Jl. Ganesha 10 , Bandung 40132 , Indonesia
- National Centre for Sustainable Transportation Technology , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung 40132 , Indonesia
| | - Martin Z. Bazant
- Department of Chemical Engineering , Massachusetts Institute of Technology , Cambridge , MA 02139 , USA
- Department of Mathematics , Massachusetts Institute of Technology , Cambridge , MA 02139 , USA
| | - I G. Wenten
- Research Center for Nanosciences and Nanotechnology , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung 40132 , Indonesia
- Department of Chemical Engineering , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung 40132 , Indonesia
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Kadja GTM, Azhari NJ, Mardiana S, Khalil M, Subagjo, Mahyuddin MH. Accelerated, Mesoporogen-Free Synthesis of Hierarchical Nanorod ZSM-48 Assisted by Hydroxyl Radicals. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03586] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Grandprix Thomryes Marth Kadja
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha no. 10, Bandung 40132, Indonesia
- Center for Catalysis and Reaction Engineering, Institut Teknologi Bandung, Jalan Ganesha no. 10, Bandung 40132, Indonesia
- Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Jalan Ganesha no. 10, Bandung 40132, Indonesia
| | - Noerma Juli Azhari
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha no. 10, Bandung 40132, Indonesia
| | - St Mardiana
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha no. 10, Bandung 40132, Indonesia
| | - Munawar Khalil
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Kampus Baru UI, Depok 16424, Indonesia
| | - Subagjo
- Center for Catalysis and Reaction Engineering, Institut Teknologi Bandung, Jalan Ganesha no. 10, Bandung 40132, Indonesia
- Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Jalan Ganesha no. 10, Bandung 40132, Indonesia
| | - Muhammad Haris Mahyuddin
- Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Jalan Ganesha no. 10, Bandung 40132, Indonesia
- Research Group of Advanced Functional Materials, Faculty of Industrial Technology, Institut Teknologi Bandung, Jalan Ganesha no. 10, Bandung 40132, Indonesia
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