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Kumar Parsapur R, Hengne AM, Melinte G, Refa Koseoglu O, Hodgkins RP, Bendjeriou-Sedjerari A, Lai Z, Huang KW. Post-Synthetic Ensembling Design of Hierarchically Ordered FAU-type Zeolite Frameworks for Vacuum Gas Oil Hydrocracking. Angew Chem Int Ed Engl 2024; 63:e202314217. [PMID: 37844013 DOI: 10.1002/anie.202314217] [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: 09/25/2023] [Revised: 10/15/2023] [Accepted: 10/16/2023] [Indexed: 10/18/2023]
Abstract
Zeolites hold importance as catalysts and membranes across numerous industrial processes that produce most of the world's fuels and chemicals. In zeolite catalysis, the rate of molecular diffusion inside the micropore channels defines the catalyst's longevity and selectivity, thereby influencing the catalytic efficiency. Decreasing the diffusion pathlengths of zeolites to the nanoscopic level by fabricating well-organized hierarchically porous architecture can efficiently overcome their intrinsic mass-transfer limitations without losing hydrothermal stability. We report a rational post-synthetic design for synthesizing hierarchically ordered FAU-type zeolites exhibiting 2D-hexagonal (P6mm) and 3D-cubic (Ia3 ‾ ${\bar{3}}$ d) mesopore channels. The synthesis involves methodical incision of the parent zeolite into unit-cell level zeolitic fragments by in situ generated base and bulky surfactants. The micellar ensembles formed by these surfactant-zeolite interactions are subsequently reorganized into various ordered mesophases by tuning the micellar curvature with ion-specific interactions (Hofmeister effect). Unlike conventional crystallization, which offers poor control over mesophase formation due to kinetic constraints, crystalline mesostructures can be developed under dilute, mild alkaline conditions by controlled reassembly. The prepared zeolites with nanometric diffusion pathlengths have demonstrated excellent yields of naphtha and middle-distillates in vacuum gas oil hydrocracking with decreased coke deposition.
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Affiliation(s)
- Rajesh Kumar Parsapur
- Division of Physical Sciences and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Amol M Hengne
- Division of Physical Sciences and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
- Agency for Science, Technology, and Research, and Institute of Materials Research and Engineering, and Institute of Sustainability for Chemicals, Energy and Environment, Singapore, 138634, Singapore
| | - Georgian Melinte
- Core Labs, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Omer Refa Koseoglu
- Catalysis Center of Excellence, Research & Development Center, Saudi Aramco, Dhahran, 31311, Saudi Arabia
| | - Robert Peter Hodgkins
- Advanced Materials Team, Catalyst Center of Excellence R&D Division, Research & Development Center, Saudi Aramco, Dhahran, 31311, Saudi Arabia
| | - Anissa Bendjeriou-Sedjerari
- Division of Physical Sciences and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Zhiping Lai
- Division of Physical Sciences and Engineering and Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Kuo-Wei Huang
- Division of Physical Sciences and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
- Agency for Science, Technology, and Research, and Institute of Materials Research and Engineering, and Institute of Sustainability for Chemicals, Energy and Environment, Singapore, 138634, Singapore
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Panda D, Kumar EA, Singh SK. Introducing mesoporosity in zeolite 4A bodies for Rapid CO2 capture. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.101223] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Zhang D, Jin C, Zou M, Huang S. Mesopore Engineering for Well‐Defined Mesoporosity in Al‐Rich Aluminosilicate Zeolites. Chemistry 2018; 25:2675-2683. [PMID: 30264413 DOI: 10.1002/chem.201802912] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Dazhi Zhang
- Division of Fossil Energy Conversion Dalian Institute of Chemical Physics, Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
| | - Changzi Jin
- Division of Fossil Energy Conversion Dalian Institute of Chemical Physics, Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
| | - Mingming Zou
- Division of Fossil Energy Conversion Dalian Institute of Chemical Physics, Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
| | - Shengjun Huang
- Division of Fossil Energy Conversion Dalian Institute of Chemical Physics, Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
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