Effects of supports on bimetallic Pd-Cu catalysts for CO2 hydrogenation to methanol

Fawei Lin, Xiao Jiang, Nuttakorn Boreriboon, Zhihua Wang, Chunshan Song, Kefa Cen

Research output: Contribution to journalArticle

Abstract

Lab-synthesized and commercial materials, TiO2, ZrO2, CeO2, Al2O3 and SiO2, were employed to investigate the effects of support on bimetallic Pd-Cu catalysts for CO2 hydrogenation to methanol. SiO2 was used as a benchmark with negligible MSI (metal-support interaction) and adsorption capacity. TiO2 P25 (TiO2-P1) with coexistence of anatase/rutile phase exhibited the optimal supports among TiO2 serial supports. TiO2-P1, ZrO2, and Al2O3 exhibited significant promotional effects than SiO2 support, and the methanol synthesis activity decreased as: TiO2-P1˜ZrO2>Al2O3>CeO2-D˜SiO2. Pd-Cu/TiO2-P1 and Pd-Cu/ZrO2 yielded 1.6-time more CH3OH than Pd-Cu/SiO2. Detailed characterizations demonstrated that methanol formation was mainly correlated to PdCu3 alloy and H2/CO2 adsorption. Pd-Cu/CeO2-D possessed the strongest MSI, but with alloy restructuring to form PdCux, lowered weakly adsorbed ratio of CO2 and surface adsorption ratio of H2/CO2, therefore exhibiting worse catalytic performance. Pd-Cu/TiO2-P1, Pd-Cu/ZrO2, and Pd-Cu/Al2O3 possessed moderate MSI and desirable performance.

Original languageEnglish (US)
Article number117210
JournalApplied Catalysis A: General
Volume585
DOIs
StatePublished - Sep 5 2019

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Catalyst supports
Hydrogenation
Methanol
Metals
Adsorption
Catalysts
Titanium dioxide
titanium dioxide

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

Cite this

Lin, Fawei ; Jiang, Xiao ; Boreriboon, Nuttakorn ; Wang, Zhihua ; Song, Chunshan ; Cen, Kefa. / Effects of supports on bimetallic Pd-Cu catalysts for CO2 hydrogenation to methanol. In: Applied Catalysis A: General. 2019 ; Vol. 585.
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abstract = "Lab-synthesized and commercial materials, TiO2, ZrO2, CeO2, Al2O3 and SiO2, were employed to investigate the effects of support on bimetallic Pd-Cu catalysts for CO2 hydrogenation to methanol. SiO2 was used as a benchmark with negligible MSI (metal-support interaction) and adsorption capacity. TiO2 P25 (TiO2-P1) with coexistence of anatase/rutile phase exhibited the optimal supports among TiO2 serial supports. TiO2-P1, ZrO2, and Al2O3 exhibited significant promotional effects than SiO2 support, and the methanol synthesis activity decreased as: TiO2-P1˜ZrO2>Al2O3>CeO2-D˜SiO2. Pd-Cu/TiO2-P1 and Pd-Cu/ZrO2 yielded 1.6-time more CH3OH than Pd-Cu/SiO2. Detailed characterizations demonstrated that methanol formation was mainly correlated to PdCu3 alloy and H2/CO2 adsorption. Pd-Cu/CeO2-D possessed the strongest MSI, but with alloy restructuring to form PdCux, lowered weakly adsorbed ratio of CO2 and surface adsorption ratio of H2/CO2, therefore exhibiting worse catalytic performance. Pd-Cu/TiO2-P1, Pd-Cu/ZrO2, and Pd-Cu/Al2O3 possessed moderate MSI and desirable performance.",
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Effects of supports on bimetallic Pd-Cu catalysts for CO2 hydrogenation to methanol. / Lin, Fawei; Jiang, Xiao; Boreriboon, Nuttakorn; Wang, Zhihua; Song, Chunshan; Cen, Kefa.

In: Applied Catalysis A: General, Vol. 585, 117210, 05.09.2019.

Research output: Contribution to journalArticle

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T1 - Effects of supports on bimetallic Pd-Cu catalysts for CO2 hydrogenation to methanol

AU - Lin, Fawei

AU - Jiang, Xiao

AU - Boreriboon, Nuttakorn

AU - Wang, Zhihua

AU - Song, Chunshan

AU - Cen, Kefa

PY - 2019/9/5

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