Synthesis of Highly Selective and Stable Co-Cr/SAPO-34 Catalyst for the Catalytic Dehydration of Ethanol to Ethylene

In this study, silicoaluminophosphate (SAPO)-34 and Me (Me = Cr, Co)-modified SAPO-34 were synthesized and used as catalysts to investigate the catalytic performance by means of a probe reaction from ethanol to ethylene. The metal oxides were loaded on the SAPO-34 support via an impregnation method....

Full description

Bibliographic Details
Main Authors:	Peirong Niu, Xiao Ren, Deyuan Xiong, Shilei Ding, Yuanlin Li, Zhaozhou Wei, Xusong Chen
Format:	Article
Language:	English
Published:	MDPI AG 2020-07-01
Series:	Catalysts
Subjects:	SAPO-34 modification dehydration ethanol to ethylene impregnation
Online Access:	https://www.mdpi.com/2073-4344/10/7/785

id	doaj-4beb3776376c4112ae2f1492b5da42f7
record_format	Article
spelling	doaj-4beb3776376c4112ae2f1492b5da42f72020-11-25T03:04:49ZengMDPI AGCatalysts2073-43442020-07-011078578510.3390/catal10070785Synthesis of Highly Selective and Stable Co-Cr/SAPO-34 Catalyst for the Catalytic Dehydration of Ethanol to EthylenePeirong Niu0Xiao Ren1Deyuan Xiong2Shilei Ding3Yuanlin Li4Zhaozhou Wei5Xusong Chen6Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, ChinaGuangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, ChinaGuangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, ChinaGuangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, ChinaGuangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, ChinaGuangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, ChinaGuangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, ChinaIn this study, silicoaluminophosphate (SAPO)-34 and Me (Me = Cr, Co)-modified SAPO-34 were synthesized and used as catalysts to investigate the catalytic performance by means of a probe reaction from ethanol to ethylene. The metal oxides were loaded on the SAPO-34 support via an impregnation method. The synthesized catalysts were characterized using XRD, SEM, EDX, FT-IR, NH<sub>3</sub>-TPD, BET, and TGA techniques. Compared to SAPO-34, SAPO-34 doped with metal oxides showed the same chabazite (CHA) topology. The structure and properties of the catalyst were further optimized by varying the amount of Me. The experimental results showed that Co-Cr/SAPO-34 exhibited the best catalytic performance when the reaction temperature reached 400 °C at a weight hourly space velocity (WHSV) of 3.5 h<sup>−1</sup>, for which the single-pass conversion of ethanol was determined as 99.15%, and the selectivity of ethylene was 99.4% at an optimum catalytic performance in the reaction of up to 600 min. In addition, Co-Cr/SAPO-34 exhibited better catalytic activity and anti-coking ability than pure SAPO-34, which was attributed to its enhanced pore structure and moderate acidity. It can also be concluded from the results of this experiment that the performance of the Co-Cr bimetal-supported catalyst is better than that of the Cr mono-metal catalyst.https://www.mdpi.com/2073-4344/10/7/785SAPO-34modificationdehydrationethanol to ethyleneimpregnation
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Peirong Niu Xiao Ren Deyuan Xiong Shilei Ding Yuanlin Li Zhaozhou Wei Xusong Chen
spellingShingle	Peirong Niu Xiao Ren Deyuan Xiong Shilei Ding Yuanlin Li Zhaozhou Wei Xusong Chen Synthesis of Highly Selective and Stable Co-Cr/SAPO-34 Catalyst for the Catalytic Dehydration of Ethanol to Ethylene Catalysts SAPO-34 modification dehydration ethanol to ethylene impregnation
author_facet	Peirong Niu Xiao Ren Deyuan Xiong Shilei Ding Yuanlin Li Zhaozhou Wei Xusong Chen
author_sort	Peirong Niu
title	Synthesis of Highly Selective and Stable Co-Cr/SAPO-34 Catalyst for the Catalytic Dehydration of Ethanol to Ethylene
title_short	Synthesis of Highly Selective and Stable Co-Cr/SAPO-34 Catalyst for the Catalytic Dehydration of Ethanol to Ethylene
title_full	Synthesis of Highly Selective and Stable Co-Cr/SAPO-34 Catalyst for the Catalytic Dehydration of Ethanol to Ethylene
title_fullStr	Synthesis of Highly Selective and Stable Co-Cr/SAPO-34 Catalyst for the Catalytic Dehydration of Ethanol to Ethylene
title_full_unstemmed	Synthesis of Highly Selective and Stable Co-Cr/SAPO-34 Catalyst for the Catalytic Dehydration of Ethanol to Ethylene
title_sort	synthesis of highly selective and stable co-cr/sapo-34 catalyst for the catalytic dehydration of ethanol to ethylene
publisher	MDPI AG
series	Catalysts
issn	2073-4344
publishDate	2020-07-01
description	In this study, silicoaluminophosphate (SAPO)-34 and Me (Me = Cr, Co)-modified SAPO-34 were synthesized and used as catalysts to investigate the catalytic performance by means of a probe reaction from ethanol to ethylene. The metal oxides were loaded on the SAPO-34 support via an impregnation method. The synthesized catalysts were characterized using XRD, SEM, EDX, FT-IR, NH<sub>3</sub>-TPD, BET, and TGA techniques. Compared to SAPO-34, SAPO-34 doped with metal oxides showed the same chabazite (CHA) topology. The structure and properties of the catalyst were further optimized by varying the amount of Me. The experimental results showed that Co-Cr/SAPO-34 exhibited the best catalytic performance when the reaction temperature reached 400 °C at a weight hourly space velocity (WHSV) of 3.5 h<sup>−1</sup>, for which the single-pass conversion of ethanol was determined as 99.15%, and the selectivity of ethylene was 99.4% at an optimum catalytic performance in the reaction of up to 600 min. In addition, Co-Cr/SAPO-34 exhibited better catalytic activity and anti-coking ability than pure SAPO-34, which was attributed to its enhanced pore structure and moderate acidity. It can also be concluded from the results of this experiment that the performance of the Co-Cr bimetal-supported catalyst is better than that of the Cr mono-metal catalyst.
topic	SAPO-34 modification dehydration ethanol to ethylene impregnation
url	https://www.mdpi.com/2073-4344/10/7/785
work_keys_str_mv	AT peirongniu synthesisofhighlyselectiveandstablecocrsapo34catalystforthecatalyticdehydrationofethanoltoethylene AT xiaoren synthesisofhighlyselectiveandstablecocrsapo34catalystforthecatalyticdehydrationofethanoltoethylene AT deyuanxiong synthesisofhighlyselectiveandstablecocrsapo34catalystforthecatalyticdehydrationofethanoltoethylene AT shileiding synthesisofhighlyselectiveandstablecocrsapo34catalystforthecatalyticdehydrationofethanoltoethylene AT yuanlinli synthesisofhighlyselectiveandstablecocrsapo34catalystforthecatalyticdehydrationofethanoltoethylene AT zhaozhouwei synthesisofhighlyselectiveandstablecocrsapo34catalystforthecatalyticdehydrationofethanoltoethylene AT xusongchen synthesisofhighlyselectiveandstablecocrsapo34catalystforthecatalyticdehydrationofethanoltoethylene
_version_	1724679698886164480

Synthesis of Highly Selective and Stable Co-Cr/SAPO-34 Catalyst for the Catalytic Dehydration of Ethanol to Ethylene

Similar Items