Lanthanum Hierarchical SAPO-34: Synthesis, Characterization, and Catalysis Evaluation in Methanol to Propylene Process

Lanthanum Hierarchical SAPO-34: Synthesis, Characterization, and Catalysis Evaluation in Methanol to Propylene Process

Hierarchical SAPO-34 molecular sieve has been synthesized with n-propylamine as a mesoscale template and used to prepare La-Hierarchical SAPO-34 by impregnation by Lanthanum nitrate and has been used in Methanol-to-Propylene (MTP) conversion process. La-H-SAPO-34 demonstrated higher activity and sel...

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Main Authors: Masoumeh Ghalbi Ahangary, Parviz Rashidi Ranjbar
Format: Article
Language:English
Published: Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR 2020-10-01
Series:Iranian Journal of Chemistry & Chemical Engineering
Subjects:
hierarchical sapo-34
methanol to propylene
metal impregnated sapo-34
lanthanium oxide
Online Access:http://www.ijcce.ac.ir/article_35974_dc8903a4e9e00929f3cf5ff43f9622aa.pdf
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spelling doaj-6016cd7c60834f6f8a30025b105c9d262021-01-23T19:52:42ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering 1021-99861021-99862020-10-01395717810.30492/ijcce.2019.3597435974Lanthanum Hierarchical SAPO-34: Synthesis, Characterization, and Catalysis Evaluation in Methanol to Propylene ProcessMasoumeh Ghalbi Ahangary0Parviz Rashidi Ranjbar1College of Alborze, University of Tehran, Tehran, I.R. IRANDepartment of Organic Chemistry, School of Chemistry, College of Science, University of Tehran, Tehran, I.R. IRANHierarchical SAPO-34 molecular sieve has been synthesized with n-propylamine as a mesoscale template and used to prepare La-Hierarchical SAPO-34 by impregnation by Lanthanum nitrate and has been used in Methanol-to-Propylene (MTP) conversion process. La-H-SAPO-34 demonstrated higher activity and selectivity for propylene (48.9%) compared to a conventional SAPO-34 catalyst (28.7%) in a fixed-bed reactor under atmospheric pressure at 450 oC and WHSV of 1.0 h-1. High selectivity and longer catalytic lifetime (7 hours) of methanol to propylene conversion have been attributed to the reduction in the acidic character of active sites and the increasing mesopore volume. The catalyst has been characterized by XRD, FE-SEM, BET, NH3-TPD, and TGA techniques and compared with SAPO-34.http://www.ijcce.ac.ir/article_35974_dc8903a4e9e00929f3cf5ff43f9622aa.pdfhierarchical sapo-34methanol to propylenemetal impregnated sapo-34lanthanium oxide
collection DOAJ
language English
format Article
sources DOAJ
author Masoumeh Ghalbi Ahangary
Parviz Rashidi Ranjbar
spellingShingle Masoumeh Ghalbi Ahangary
Parviz Rashidi Ranjbar
Lanthanum Hierarchical SAPO-34: Synthesis, Characterization, and Catalysis Evaluation in Methanol to Propylene Process
Iranian Journal of Chemistry & Chemical Engineering
hierarchical sapo-34
methanol to propylene
metal impregnated sapo-34
lanthanium oxide
author_facet Masoumeh Ghalbi Ahangary
Parviz Rashidi Ranjbar
author_sort Masoumeh Ghalbi Ahangary
title Lanthanum Hierarchical SAPO-34: Synthesis, Characterization, and Catalysis Evaluation in Methanol to Propylene Process
title_short Lanthanum Hierarchical SAPO-34: Synthesis, Characterization, and Catalysis Evaluation in Methanol to Propylene Process
title_full Lanthanum Hierarchical SAPO-34: Synthesis, Characterization, and Catalysis Evaluation in Methanol to Propylene Process
title_fullStr Lanthanum Hierarchical SAPO-34: Synthesis, Characterization, and Catalysis Evaluation in Methanol to Propylene Process
title_full_unstemmed Lanthanum Hierarchical SAPO-34: Synthesis, Characterization, and Catalysis Evaluation in Methanol to Propylene Process
title_sort lanthanum hierarchical sapo-34: synthesis, characterization, and catalysis evaluation in methanol to propylene process
publisher Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
series Iranian Journal of Chemistry & Chemical Engineering
issn 1021-9986
1021-9986
publishDate 2020-10-01
description Hierarchical SAPO-34 molecular sieve has been synthesized with n-propylamine as a mesoscale template and used to prepare La-Hierarchical SAPO-34 by impregnation by Lanthanum nitrate and has been used in Methanol-to-Propylene (MTP) conversion process. La-H-SAPO-34 demonstrated higher activity and selectivity for propylene (48.9%) compared to a conventional SAPO-34 catalyst (28.7%) in a fixed-bed reactor under atmospheric pressure at 450 oC and WHSV of 1.0 h-1. High selectivity and longer catalytic lifetime (7 hours) of methanol to propylene conversion have been attributed to the reduction in the acidic character of active sites and the increasing mesopore volume. The catalyst has been characterized by XRD, FE-SEM, BET, NH3-TPD, and TGA techniques and compared with SAPO-34.
topic hierarchical sapo-34
methanol to propylene
metal impregnated sapo-34
lanthanium oxide
url http://www.ijcce.ac.ir/article_35974_dc8903a4e9e00929f3cf5ff43f9622aa.pdf
work_keys_str_mv AT masoumehghalbiahangary lanthanumhierarchicalsapo34synthesischaracterizationandcatalysisevaluationinmethanoltopropyleneprocess
AT parvizrashidiranjbar lanthanumhierarchicalsapo34synthesischaracterizationandcatalysisevaluationinmethanoltopropyleneprocess
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