Effect of KCoMoS<sub>2</sub> Catalyst Structures on the Catalytic Performance of Higher Alcohols Synthesis via CO Hydrogenation

Effect of KCoMoS<sub>2</sub> Catalyst Structures on the Catalytic Performance of Higher Alcohols Synthesis via CO Hydrogenation

Different structures of cobalt and potassium modified molybdenum sulfide catalyst (KCoMoS<sub>2</sub>) were synthesized by hydrothermal synthesis, coprecipitation and reverse microemulsion methods. Nitrogen adsorption, XRD, TEM, XPS and HAADF-STEM-EDS techniques were used to characterize...

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Main Authors: Niannian Qin, Xiaoliang Mu, Lu Zhao, Kegong Fang
Format: Article
Language:English
Published: MDPI AG 2020-01-01
Series:Catalysts
Subjects:
higher alcohol synthesis
co hydrogenation
mos<sub>2</sub>-based catalysts
Online Access:https://www.mdpi.com/2073-4344/10/2/151
id doaj-ac43604978e54a41ba1292061fc207b8
record_format Article
spelling doaj-ac43604978e54a41ba1292061fc207b82020-11-25T02:18:25ZengMDPI AGCatalysts2073-43442020-01-0110215110.3390/catal10020151catal10020151Effect of KCoMoS<sub>2</sub> Catalyst Structures on the Catalytic Performance of Higher Alcohols Synthesis via CO HydrogenationNiannian Qin0Xiaoliang Mu1Lu Zhao2Kegong Fang3State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, ChinaState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, ChinaState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, ChinaState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, ChinaDifferent structures of cobalt and potassium modified molybdenum sulfide catalyst (KCoMoS<sub>2</sub>) were synthesized by hydrothermal synthesis, coprecipitation and reverse microemulsion methods. Nitrogen adsorption, XRD, TEM, XPS and HAADF-STEM-EDS techniques were used to characterize the catalysts structures. The results indicate that the molybdenum sulfide-based catalyst synthesized by the reverse microemulsion method possessed less sheets with small lateral dimensions, while the catalysts prepared by the former two methods contained a higher number of stacking MoS<sub>2</sub> layers. In the test of higher alcohol synthesis from CO hydrogenation, it was found that the catalyst synthesized by the reverse microemulsion method exhibited the best CO conversion and C<sub>2+</sub>OH selectivity among the prepared catalysts. The correlation study between the catalysts structure and the reaction properties implies that the shorter and thinner molybdenum sulfide sheet structure favored for the exposure of the active sites, which, in turn, brought about an enhanced CO conversion and more C<sub>2+</sub>OH formation.https://www.mdpi.com/2073-4344/10/2/151higher alcohol synthesisco hydrogenationmos<sub>2</sub>-based catalysts
collection DOAJ
language English
format Article
sources DOAJ
author Niannian Qin
Xiaoliang Mu
Lu Zhao
Kegong Fang
spellingShingle Niannian Qin
Xiaoliang Mu
Lu Zhao
Kegong Fang
Effect of KCoMoS<sub>2</sub> Catalyst Structures on the Catalytic Performance of Higher Alcohols Synthesis via CO Hydrogenation
Catalysts
higher alcohol synthesis
co hydrogenation
mos<sub>2</sub>-based catalysts
author_facet Niannian Qin
Xiaoliang Mu
Lu Zhao
Kegong Fang
author_sort Niannian Qin
title Effect of KCoMoS<sub>2</sub> Catalyst Structures on the Catalytic Performance of Higher Alcohols Synthesis via CO Hydrogenation
title_short Effect of KCoMoS<sub>2</sub> Catalyst Structures on the Catalytic Performance of Higher Alcohols Synthesis via CO Hydrogenation
title_full Effect of KCoMoS<sub>2</sub> Catalyst Structures on the Catalytic Performance of Higher Alcohols Synthesis via CO Hydrogenation
title_fullStr Effect of KCoMoS<sub>2</sub> Catalyst Structures on the Catalytic Performance of Higher Alcohols Synthesis via CO Hydrogenation
title_full_unstemmed Effect of KCoMoS<sub>2</sub> Catalyst Structures on the Catalytic Performance of Higher Alcohols Synthesis via CO Hydrogenation
title_sort effect of kcomos<sub>2</sub> catalyst structures on the catalytic performance of higher alcohols synthesis via co hydrogenation
publisher MDPI AG
series Catalysts
issn 2073-4344
publishDate 2020-01-01
description Different structures of cobalt and potassium modified molybdenum sulfide catalyst (KCoMoS<sub>2</sub>) were synthesized by hydrothermal synthesis, coprecipitation and reverse microemulsion methods. Nitrogen adsorption, XRD, TEM, XPS and HAADF-STEM-EDS techniques were used to characterize the catalysts structures. The results indicate that the molybdenum sulfide-based catalyst synthesized by the reverse microemulsion method possessed less sheets with small lateral dimensions, while the catalysts prepared by the former two methods contained a higher number of stacking MoS<sub>2</sub> layers. In the test of higher alcohol synthesis from CO hydrogenation, it was found that the catalyst synthesized by the reverse microemulsion method exhibited the best CO conversion and C<sub>2+</sub>OH selectivity among the prepared catalysts. The correlation study between the catalysts structure and the reaction properties implies that the shorter and thinner molybdenum sulfide sheet structure favored for the exposure of the active sites, which, in turn, brought about an enhanced CO conversion and more C<sub>2+</sub>OH formation.
topic higher alcohol synthesis
co hydrogenation
mos<sub>2</sub>-based catalysts
url https://www.mdpi.com/2073-4344/10/2/151
work_keys_str_mv AT niannianqin effectofkcomossub2subcatalyststructuresonthecatalyticperformanceofhigheralcoholssynthesisviacohydrogenation
AT xiaoliangmu effectofkcomossub2subcatalyststructuresonthecatalyticperformanceofhigheralcoholssynthesisviacohydrogenation
AT luzhao effectofkcomossub2subcatalyststructuresonthecatalyticperformanceofhigheralcoholssynthesisviacohydrogenation
AT kegongfang effectofkcomossub2subcatalyststructuresonthecatalyticperformanceofhigheralcoholssynthesisviacohydrogenation
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