TY - JOUR
T1 - Highly selective conversion of CO2 to lower hydrocarbons (C2-C4) over bifunctional catalysts composed of In2O3-ZrO2 and zeolite
AU - Wang, Jianyang
AU - Zhang, Anfeng
AU - Jiang, Xiao
AU - Song, Chunshan
AU - Guo, Xinwen
N1 - Funding Information:
This work was financially supported in part by the National Key Research and Development Program of China (2016YFB0600902-5), the National Natural Science Foundation of China (No. 21503027 and No. 21503029), the Fundamental Research Funds for the Central Universities (No. DUT15RC(3)027 and No. DUT15ZD236), the QianRen Program of China and the Pennsylvania State University.
Publisher Copyright:
© 2018 Elsevier Ltd. All rights reserved.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2018/10
Y1 - 2018/10
N2 - Although many researchers have reported CO2 hydrogenation to various C1 chemicals, it is still challenging to directly and selectively convert CO2 to C2-C4 hydrocarbons in terms of overcoming the extreme inertness of CO2 and a high C-C coupling barrier. In the present work, we report an efficient integration of methanol-synthesis and the methanol-to-hydrocarbons with the bifunctional catalyst component of In2O3-ZrO2 and SAPO-5. These tandem reactions exhibit an excellent relative selectivity of C2-C4 (83%) with a suppressed CH4 relative selectivity less than 3% at T = 300 °C. A detailed analysis indicates that the partially reduced indium oxide surface (In2O3-ZrO2) can better activate CO2 and promote the synthesis of methanol than In2O3 alone, and C-C coupling is subsequently manipulated within the confined acidic pores of SAPO-5 according to XRD, H2-TPR, CO2-TPD, SEM and TEM. Furthermore, the proximity of two components and the content of Si also play an important role in such outstanding selectivity to C2-C4. Our study paves a new path for the direct synthesis of lower hydrocarbons.
AB - Although many researchers have reported CO2 hydrogenation to various C1 chemicals, it is still challenging to directly and selectively convert CO2 to C2-C4 hydrocarbons in terms of overcoming the extreme inertness of CO2 and a high C-C coupling barrier. In the present work, we report an efficient integration of methanol-synthesis and the methanol-to-hydrocarbons with the bifunctional catalyst component of In2O3-ZrO2 and SAPO-5. These tandem reactions exhibit an excellent relative selectivity of C2-C4 (83%) with a suppressed CH4 relative selectivity less than 3% at T = 300 °C. A detailed analysis indicates that the partially reduced indium oxide surface (In2O3-ZrO2) can better activate CO2 and promote the synthesis of methanol than In2O3 alone, and C-C coupling is subsequently manipulated within the confined acidic pores of SAPO-5 according to XRD, H2-TPR, CO2-TPD, SEM and TEM. Furthermore, the proximity of two components and the content of Si also play an important role in such outstanding selectivity to C2-C4. Our study paves a new path for the direct synthesis of lower hydrocarbons.
UR - http://www.scopus.com/inward/record.url?scp=85050005612&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85050005612&partnerID=8YFLogxK
U2 - 10.1016/j.jcou.2018.07.006
DO - 10.1016/j.jcou.2018.07.006
M3 - Article
AN - SCOPUS:85050005612
SN - 2212-9820
VL - 27
SP - 81
EP - 88
JO - Journal of CO2 Utilization
JF - Journal of CO2 Utilization
ER -