CO2hydrogenation to dimethyl ether over In2O3catalysts supported on aluminosilicate halloysite nanotubes

Alexey Pechenkin, Dmitry Potemkin, Sukhe Badmaev, Ekaterina Smirnova, Kirill Cherednichenko, Vladimir Vinokurov, Aleksandr Glotov

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

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.

Язык оригиналаанглийский
Страницы (с-по)594-605
Число страниц12
ЖурналGreen Processing and Synthesis
Том10
Номер выпуска1
DOI
СостояниеОпубликовано - 1 янв 2021

Предметные области OECD FOS+WOS

  • 1.04.DY ХИМИЯ, МУЛЬТИДИСЦИПЛИНАРНАЯ
  • 2.04 ХИМИЧЕСКИЕ ТЕХНОЛОГИИ

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