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Soltani S, Zamaniyan A, Darian JT, Soltanali S. The effect of Si/Al ratio of ZSM-12 zeolite on its morphology, acidity and crystal size for the catalytic performance in the HTO process. RSC Adv 2024; 14:5380-5389. [PMID: 38348292 PMCID: PMC10859842 DOI: 10.1039/d3ra08792a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 02/06/2024] [Indexed: 02/15/2024] Open
Abstract
In this research, ZSM-12 zeolite with six Si/Al ratios (20 to 320) was synthesized by a hydrothermal method and systematically investigated. The physicochemical properties of the synthesized nano zeolites were evaluated and compared by XRD, FE-SEM,ICP-AES, NH3-TPD, BET, FT-IR, and TGA analyses. The results show that when the Si/Al ratio increases, the amount of microcrystals increases with the dominant competitive phase of cristobalite by decreasing the MTW phase. The catalytic assessment of synthesized zeolites in the (n-hexane to olefins) HTO process in a fixed bed reactor under atmospheric pressure and WHSV equal to 4 h-1 at 550 °C was evaluated and various parameters such as selectivity towards light olefins, P/E ratio, production of light alkanes, and aromatic compounds (BTX) were investigated. The result of the n-hexane to olefins process indicated that the presence of cristobalite as an impurity phase strongly affects the activity of the catalysts. The Z80 zeolite, with a Si/Al ratio of 80, corresponds to the pure form of ZSM-12 and exhibits the highest light olefin yield at 52.5%. This zeolite demonstrates superior propylene selectivity (P/E = 1.75) owing to its well-suited pore structure, wide channels, and optimal acidity derived from the MTW zeolite. On the other hand, zeolite Z320 has a lower light olefin yield (19.4%) and a lower P/E (1.1) ratio. In addition, according to the results of the TGA analysis, the content of coke on the Z80 catalyst after the catalytic reaction is much less than other catalysts after the catalytic reactor test.
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Affiliation(s)
- Samira Soltani
- Department of Chemical Engineering, Tarbiat Modares University Tehran Iran
| | - Akbar Zamaniyan
- Catalysis Technologies Development Division, Research Institute of Petroleum Industry (RIPI) Tehran Iran
| | | | - Saeed Soltanali
- Catalysis Technologies Development Division, Research Institute of Petroleum Industry (RIPI) Tehran Iran
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Kazemi M, Hosseini MR, Zamaniyan A, Ahmadi A. Application of cupric or ferric ions as environmentally benign oxidants to the chloride leaching of platinum from spent reforming catalysts. J Environ Manage 2023; 337:117768. [PMID: 36963178 DOI: 10.1016/j.jenvman.2023.117768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 03/03/2023] [Accepted: 03/18/2023] [Indexed: 06/18/2023]
Abstract
Recovery of precious metals has been considered due to their limited availability and resources, and the reduction of environmental hazards. In this study, the environmentally friendly chloride leaching method was used to recover platinum (Pt) from a spent reforming catalyst. Hydrochloric acid and sodium chloride were applied as the complexing agent and ferric or cupric chloride (FeCl3, CuCl2) was used as oxidants. Response surface methodology was implemented to investigate the influences of acid concentration (1-3 M), oxidant concentration (0.5-1.3 M), and temperature (70-90 °C) on the Pt extraction at a fixed duration of 3 h using two separate Box-Behnken experimental designs. Increasing temperature and acid concentration improved the Pt recovery from ∼52% to ∼89% in the presence of 1 M FeCl3, and from ∼29% to 94% in the presence of 0.75 M CuCl2. Generally, at low acid concentrations, ferric chloride was more efficient in Pt dissolution, while, at high acid concentrations, cupric chloride performed better. Finally, the platinum content of the pregnant leach solution was precipitated by adding a saturated ammonium chloride solution. According to the results of the X-ray diffraction analysis, the obtained precipitate was mainly composed of ammonium hexachloroplatinate, sodium chloride, and ammonium chloride. Also, the Pt assay of the powder was determined as 21%.
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Affiliation(s)
- Mahsa Kazemi
- Department of Mining Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran
| | - Mohammad Raouf Hosseini
- Department of Mining Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran.
| | - Akbar Zamaniyan
- Downstream Technologies Research Center, Research Institute of Petroleum Industry, Tehran 14665-137, Iran.
| | - Ali Ahmadi
- Department of Mining Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran
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Abbasghorbani M, Farajmand B, Vahidi M, Zamaniyan A. Application of cation-exchange chromatography for quantification of some ethanolamine degradation products in the natural gas sweetening solution. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Elham Yaghoobpour, Zamani Y, Zarrinpashne S, Zamaniyan A. On Efficiency of Vanadium-Oxide Promoter in Cobalt Fischer-Tropsch Catalysts. Catal Ind 2021. [DOI: 10.1134/s2070050421020124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Khani Y, Safari N, Bahadoran F, Soltanali S, Zamaniyan A. High Catalytic Activity and Low Coke Formation of Ni/Y xCe yRu zO 4 Catalysts in the Methane Reforming Process in a Microstructure Reactor. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasin Khani
- Department of Chemistry, Shahid Beheshti University, Evin, 1983963113 Tehran, Iran
- Gas Research Division, Research Institute of Petroleum Industry (RIPI), 1485733111 Tehran, Iran
| | - Nasser Safari
- Department of Chemistry, Shahid Beheshti University, Evin, 1983963113 Tehran, Iran
| | - Farzad Bahadoran
- Gas Research Division, Research Institute of Petroleum Industry (RIPI), 1485733111 Tehran, Iran
| | - Saeed Soltanali
- Catalysis Technologies Development Division, Research Institute of Petroleum Industry (RIPI), 1485733111 Tehran, Iran
| | - Akbar Zamaniyan
- Gas Research Division, Research Institute of Petroleum Industry (RIPI), 1485733111 Tehran, Iran
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Khalighi R, Bahadoran F, Panjeshahi MH, Zamaniyan A, Tahouni N. Effects of Nickel Aluminate Spinel (NiAl
2
O
4
) as Catalyst Support and Promoters (Ru, Rh) in Fischer‐Tropsch Synthesis. ChemistrySelect 2020. [DOI: 10.1002/slct.202000740] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Reza Khalighi
- School of Chemical EngineeringCollege of EngineeringUniversity of Tehran Tehran Iran
| | - Farzad Bahadoran
- Gas Research DivisionResearch Institute of Petroleum Industry, West Blvd. of Azadi Sport complex Tehran Iran
| | - M. Hassan Panjeshahi
- School of Chemical EngineeringCollege of EngineeringUniversity of Tehran Tehran Iran
| | - Akbar Zamaniyan
- Gas Research DivisionResearch Institute of Petroleum Industry, West Blvd. of Azadi Sport complex Tehran Iran
| | - Nassim Tahouni
- School of Chemical EngineeringCollege of EngineeringUniversity of Tehran Tehran Iran
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Yaghoobpour E, Zamani Y, Zarrinpashne S, Zamaniyan A. Profound synergetic effect of metal oxide promoters and TiO
2
–SiO
2
binary support in cobalt Fischer‐Tropsch catalyst. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201900326] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Elham Yaghoobpour
- Gas Research DivisionResearch Institute of Petroleum Industry (RIPI) Tehran Iran
| | - Yahya Zamani
- Gas Research DivisionResearch Institute of Petroleum Industry (RIPI) Tehran Iran
| | - Saeed Zarrinpashne
- Gas Research DivisionResearch Institute of Petroleum Industry (RIPI) Tehran Iran
| | - Akbar Zamaniyan
- Gas Research DivisionResearch Institute of Petroleum Industry (RIPI) Tehran Iran
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Hatami B, Tavasoli A, Asghari A, Zamani Y, Zamaniyan A. Kinetics Modeling of Fischer–Tropsch Synthesis on the Cobalt Catalyst Supported on Functionalized Carbon Nanotubes. Kinet Catal 2019. [DOI: 10.1134/s0023158418060046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Hatami B, Tavasoli A, Asghari A, Zamani Y, Zamaniyan A. Intrinsic Kinetics of Fischer–Tropsch Synthesis over Co/CNTs Catalysts: Effects of Support Interaction. Progress in Reaction Kinetics and Mechanism 2018. [DOI: 10.3184/146867818x15319903829182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The activities of cobalt catalysts prepared by the microemulsion impregnation method on carbon nanotubes (CNTs) and functionalised carbon nanotubes (FCNTs) supports were evaluated in the Fischer–Tropsch synthesis (FTS). The catalysts were characterised by transmission electron microscopy, X-ray diffraction and Brunauer–Emmett–Teller surface area methods. The results show that the cobalt particles in the FCNTs support are mostly located inside the tubes of the CNTs and show a narrower particle size distribution. The experimental results show that the cobalt catalyst supported on FCNTs leads to a higher CO conversion and FTS activity compared to that supported on normal CNTs. Calculated kinetic results show that the activation energies fall within the narrow range of 101.1–107.1 kJ mol−1 and the heat of hydrogen adsorption was calculated to be −40.2 and −26.2 kJ mol−1 for Co/CNTs and Co/FCNTs catalysts respectively. FCNTs, as a catalyst support of Co nanoparticles, maintain high dispersion which can be attributed to a hydrogen spillover effect of functional groups on the CNT surface.
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Affiliation(s)
- Behnam Hatami
- Chemistry Department, Faculty of Science, Semnan University, Semnan, Iran
- Gas Research Division, Research Institute of Petroleum Industry, Tehran, Iran
| | - Ahmad Tavasoli
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Alireza Asghari
- Chemistry Department, Faculty of Science, Semnan University, Semnan, Iran
| | - Yahya Zamani
- Gas Research Division, Research Institute of Petroleum Industry, Tehran, Iran
| | - Akbar Zamaniyan
- Gas Research Division, Research Institute of Petroleum Industry, Tehran, Iran
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Yaghoobpour E, Zamani Y, Zarrinpashne S, Zamaniyan A. Fischer–Tropsch synthesis: effect of silica on hydrocarbon production over cobalt-based catalysts. Chem Pap 2018. [DOI: 10.1007/s11696-018-0565-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Amanipour M, Babakhani EG, Towfighi J, Zamaniyan A. Evaluation of a tubular nano-composite ceramic membrane for hydrogen separation in methane steam reforming reaction. RSC Adv 2016. [DOI: 10.1039/c6ra14876j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nano-composite ceramic membranes are successfully applied in a membrane reactor for simultaneous production and purification of hydrogen in the MSR reaction.
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Affiliation(s)
- Mahdi Amanipour
- Chemical Engineering Department
- Engineering Faculty
- University of Tarbiat Modares
- Tehran
- Iran
| | | | - Jafar Towfighi
- Chemical Engineering Department
- Engineering Faculty
- University of Tarbiat Modares
- Tehran
- Iran
| | - Akbar Zamaniyan
- Gas Department
- Research Institute of Petroleum Industry (RIPI)
- Tehran
- Iran
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Amanipour M, Towfighi J, Zamaniyan A, Babakhani EG, Heidari M. Performance of a nickel–alumina catalytic layer for simultaneous production and purification of hydrogen in a tubular membrane reactor. RSC Adv 2016. [DOI: 10.1039/c6ra12870j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new approach is used to coat a catalytic layer on top of a composite membrane to make a catalytic membrane reactor.
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Affiliation(s)
- Mahdi Amanipour
- Chemical Engineering Department
- Tarbiat Modares University
- Tehran
- Iran
| | - Jafar Towfighi
- Chemical Engineering Department
- Tarbiat Modares University
- Tehran
- Iran
| | - Akbar Zamaniyan
- Gas Division
- Research Institute of Petroleum Industry
- Tehran
- Iran
| | | | - Marzieh Heidari
- Chemical and Petroleum Engineering Department
- Sharif University of Technology
- Tehran
- Iran
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Zanganeh R, Rezaei M, Zamaniyan A. Preparation of nanocrystalline NiO–MgO solid solution powders as catalyst for methane reforming with carbon dioxide: Effect of preparation conditions. ADV POWDER TECHNOL 2014. [DOI: 10.1016/j.apt.2014.02.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zanganeh R, Rezaei M, Zamaniyan A, Bozorgzadeh HR. Preparation of Ni0.1Mg0.9O nanocrystalline powder and its catalytic performance in methane reforming with carbon dioxide. J IND ENG CHEM 2013. [DOI: 10.1016/j.jiec.2012.08.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Amanipour M, Ganji Babakhani E, Safekordi A, Zamaniyan A, Heidari M. Effect of CVD parameters on hydrogen permeation properties in a nano-composite SiO2–Al2O3 membrane. J Memb Sci 2012. [DOI: 10.1016/j.memsci.2012.09.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Zamaniyan A, Khodadadi AA, Mortazavi Y, Manafi H. Comparative model analysis of the performance of tube fitted bulk monolithic catalyst with conventional pellet shapes for natural gas reforming. J IND ENG CHEM 2011. [DOI: 10.1016/j.jiec.2011.05.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Behroozsarand A, Ebrahimi H, Zamaniyan A. Multiobjective Optimization of Industrial Autothermal Reformer for Syngas Production Using Nonsorting Genetic Algorithm II. Ind Eng Chem Res 2009. [DOI: 10.1021/ie900259n] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alireza Behroozsarand
- Department of Chemical Engineering, Sahand University of Technology, Tabriz, 651335-1996, Iran, and Department of Natural Gas Conversion, Gas Research Division, Research Institute of Petroleum Industry (RIPI), Tehran 14665-1998, Iran
| | - Hadi Ebrahimi
- Department of Chemical Engineering, Sahand University of Technology, Tabriz, 651335-1996, Iran, and Department of Natural Gas Conversion, Gas Research Division, Research Institute of Petroleum Industry (RIPI), Tehran 14665-1998, Iran
| | - Akbar Zamaniyan
- Department of Chemical Engineering, Sahand University of Technology, Tabriz, 651335-1996, Iran, and Department of Natural Gas Conversion, Gas Research Division, Research Institute of Petroleum Industry (RIPI), Tehran 14665-1998, Iran
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