TY - JOUR

T1 - CO2hydrogenation to dimethyl ether over In2O3catalysts supported on aluminosilicate halloysite nanotubes

AU - Pechenkin, Alexey

AU - Potemkin, Dmitry

AU - Badmaev, Sukhe

AU - Smirnova, Ekaterina

AU - Cherednichenko, Kirill

AU - Vinokurov, Vladimir

AU - Glotov, Aleksandr

N1 - Funding Information: Funding information: This research was funded by RFBR project 19-33-60056 and as a part of the state task of Gubkin University (synthesis of MCM-41/HNT, textural properties evaluation, TEM), project number FSZE-2020-0007 (0768-2020-0007, A.G., V.V., K.Ch.). Publisher Copyright: © 2021 Alexey Pechenkin et al., published by De Gruyter.

PY - 2021/1/1

Y1 - 2021/1/1

N2 - This work presents results on CO2 hydrogenation to dimethyl ether (DME) over bifunctional catalysts consisting of In2O3, supported on natural clay halloysite nanotubes (HNT), and HNT modified with Al-MCM-41 silica arrays. The catalysts were characterized by TEM, STEM, EDX-mapping, NH3-TPD, XRD, low-temperature nitrogen adsorption, TPO, and H2-TPR techniques. Catalytic properties of In2O3/HNT and In2O3/Al-MCM-41/HNT in the CO2 hydrogenation to DME were investigated in a fixed-bed continuous flow stainless steel reactor at 10-40 atm, in the temperature range of 200-300°C, at GHSV = 12,000 h-1 and molar ratio of H2:CO2 = 3:1. The best catalyst for CO2 hydrogenation was In2O3/Al-MCM-41/HNT that provided DME production rate 0.15 gDME·(gcat·h)-1 with DME selectivity 53% and at 40 bar, GHSV = 12,000 h-1, and T = 250°C. It was shown that In2O3/Al-MCM-41/HNT exhibited stable operation for at least 40 h on stream.

AB - This work presents results on CO2 hydrogenation to dimethyl ether (DME) over bifunctional catalysts consisting of In2O3, supported on natural clay halloysite nanotubes (HNT), and HNT modified with Al-MCM-41 silica arrays. The catalysts were characterized by TEM, STEM, EDX-mapping, NH3-TPD, XRD, low-temperature nitrogen adsorption, TPO, and H2-TPR techniques. Catalytic properties of In2O3/HNT and In2O3/Al-MCM-41/HNT in the CO2 hydrogenation to DME were investigated in a fixed-bed continuous flow stainless steel reactor at 10-40 atm, in the temperature range of 200-300°C, at GHSV = 12,000 h-1 and molar ratio of H2:CO2 = 3:1. The best catalyst for CO2 hydrogenation was In2O3/Al-MCM-41/HNT that provided DME production rate 0.15 gDME·(gcat·h)-1 with DME selectivity 53% and at 40 bar, GHSV = 12,000 h-1, and T = 250°C. It was shown that In2O3/Al-MCM-41/HNT exhibited stable operation for at least 40 h on stream.

KW - COhydrogenation

KW - dimethyl ether

KW - halloysite nanotubes

KW - indium oxide catalysts

KW - mesoporous aluminosilicates

UR - http://www.scopus.com/inward/record.url?scp=85117930929&partnerID=8YFLogxK

U2 - 10.1515/gps-2021-0058

DO - 10.1515/gps-2021-0058

M3 - Article

AN - SCOPUS:85117930929

VL - 10

SP - 594

EP - 605

JO - Green Processing and Synthesis

JF - Green Processing and Synthesis

SN - 2191-9542

IS - 1

ER -