Stable and facile ethanol synthesis from syngas in one reactor by tandem combination CuZnAl-HZSM-5, modified-H-Mordenite with CuZnAl catalyst

Cao, Zhenggang; Hu, Tao; Guo, Jiawei; Xie, Jun; Zhang, Nuowei; Zheng, Jinbao; Che, Liming; Chen, Binghong

doi:10.1016/j.fuel.2019.05.125

Cited by 17 publications

(4 citation statements)

References 37 publications

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“… 200 Ethanol synthesis has been attempted from syngas feedstock, HMOR modified with Zn improved the catalytic performance by improving the selectivity from 7.4% to 69%; however, to avoid deactivation Zn-HMOR was subsequently modified with pyridine. 201 Alkaline treatment generated mesopore mordenite catalyst with varying Si/Al ratio was used in the pyrolysis and catalytic treatment of vacuum gas oil, which produced less yield but higher quality oil. 202 Catalytic pyrolysis using proton forms of mordenite was attempted in the conversion of pine wood biomass, and it was observed that ketones and phenols formed the major groups of elements in the biofuel.…”

Section: Methodsmentioning

confidence: 99%

Recent advances in the synthesis and applications of mordenite zeolite – review

et al. 2021

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Section: Methodsmentioning

confidence: 99%

Recent advances in the synthesis and applications of mordenite zeolite – review

et al. 2021

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“…Nowadays, dimethyl ether (DME) has attracted more and more attention concerning its application acting as both an industrially important chemical materials and a clean alternative fuel . DME was generally produced by two routes: one is methanol dehydration catalyzed by an acidic catalyst, in which methanol is previously synthesized by catalyzed hydrogenation of syngas; the other is a direct synthesis route from one‐pot transformation of syngas over a bifunctional catalyst . The latter is regarded as a promising pathway for DME production.…”

Section: Methodsmentioning

confidence: 99%

Implanting Copper−Zinc Nanoparticles into the Matrix of Mesoporous Alumina as a Highly Selective Bifunctional Catalyst for Direct Synthesis of Dimethyl Ether from Syngas

Sun

Zhao

2020

ChemCatChem

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Dimethyl ether (DME) is an industrially important intermediate and clean alternative fuel. Thus, developing an efficient bifunctional catalyst for syngas‐to‐DME is practically important but remains a challenge. In this paper, a copper−zinc implanting into matrix of mesoporous alumina (CuZn@m−Al2O3) catalyst was prepared by introducing the as‐prepared Cu−Zn oxalate nanoparticles into the Al(i‐OPr)3‐containing precursor solution for preparing mesoporous Al2O3 (m‐Al2O3) through evaporation‐inducing assembly method. The preparation of Cu−Zn oxalate in advance for synthesizing CuZn@m−Al2O3 can intensify the Cu−ZnO interaction, confirmed by XRD and H2‐TPR. Thanks to the unique CuZn‐implanting closed structure, CuZn@m−Al2O3 shows 89.0 % of higher selectivity with comparable CO conversion (15.5 %) than the previously reported supported‐type CuZn catalyst on m‐Al2O3 (CuZn/m−Al2O3, 75.2 %) for hydrogenation of syngas to DME. Over the developed CuZn@m−Al2O3 catalyst, 0.16 mmol g−1 cat h−1 of high DME rate can be achieved. CuZn@m−Al2O3 also shows higher methanation resistance (2.7 % CH4) compared to CuZn/m−Al2O3 (6.3 %), ascribed to intensified Cu−Zn interaction owing to the as‐formation of Cu−Zn oxalate in advance. Moreover, Both CuZn@m−Al2O3 and CuZn/m−Al2O3 exhibit high stability. The outstanding catalytic performance of CuZn@m−Al2O3 allows it to be a promising catalyst for DME synthesis from syngas.

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“…Tandem/relay catalysis, in which different reactions are sequentially placed in cascade, provides an alternative route to control the reaction sequence and intermediates (Table S2). − Recently, Wang et al designed a triple tandem catalytic system for syngas conversion, sequentially combining K + -modified ZnO–ZrO 2 , H-MOR zeolite, and Pt–Sn/SiC catalysts, to achieve an ethanol selectivity of 90% . This pioneering work preliminarily proved the efficacy of tandem catalysis for ethanol synthesis, involving the sequential occurrence of methanol synthesis, methanol carbonylation to acetic acid (AA), and hydrogenation of AA.…”

Section: Introductionmentioning

confidence: 99%

Efficient Conversion of Syngas into Ethanol by Tandem Catalysis

Han,

Fan,

Chen

et al. 2023

ACS Catal.

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Syngas conversion into ethanol by tandem catalysis has exhibited its potential for the selective production of ethanol. For practical applications, it is desired to develop a robust catalyst system to enhance the CO conversion while maintaining high selectivity to ethanol. Here, we report an efficient and stable tripletandem catalyst system consisting of CuZnAlO x /γ-Al 2 O 3 , pyridinemodified H-MOR zeolite (Py-HMOR), and Cu 1 Zn 2 AlO x , which catalyzes syngas to dimethyl ether (DME), DME carbonylation to methyl acetate (MA), and MA hydrogenation to ethanol in tandem. Both high CO conversion (52%) and satisfying selectivity to ethanol (62%, excluding CO 2 ) were achieved simultaneously, leading to an unprecedently high ethanol space-time yield of 6.5 mmol g −1 h −1 . In situ DRIFT and control catalytic tests were designed to elucidate the intrinsic reason of the high activity and stability of Py-HMOR in the tandem system. The developed tandem catalyst system presents a promising prospect for the direct ethanol manufacture from syngas.

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Stable and facile ethanol synthesis from syngas in one reactor by tandem combination CuZnAl-HZSM-5, modified-H-Mordenite with CuZnAl catalyst

Cited by 17 publications

References 37 publications

Recent advances in the synthesis and applications of mordenite zeolite – review

Recent advances in the synthesis and applications of mordenite zeolite – review

Implanting Copper−Zinc Nanoparticles into the Matrix of Mesoporous Alumina as a Highly Selective Bifunctional Catalyst for Direct Synthesis of Dimethyl Ether from Syngas

Efficient Conversion of Syngas into Ethanol by Tandem Catalysis

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