Insights into direct/synergetic processes for high-efficiency steam reforming of methanol over Pt-In2O3/CeO2 catalysts: The effect of support structural properties

Liu，Xue1; Wang，Kai2; Cao，Daofan1; Li，Chao1; Wang，Lipeng1; Wang，Min3; Li，Qi4; Wu，Changning5; Liu，Ke1,5,6

2024-04-15

10.1016/j.fuel.2023.130760

Fuel   影响因子和分区

0016-2361

The addition of Pt (1 %) and InO (7 %) phases into CeO supports exhibited an interaction, resulting in the formation of bifunctional Pt-InO-CeO, Pt-CeO (0 < δ < 2), InO-CeO, and inactive InO macroparticles., Low CO selectivity was achieved in methanol steam reforming (MSR) by sacrificing methanol conversion/catalytic stability. Two distinct reaction paths were identified, viz., the direct process over bifunctional Pt-InO-CeO and the synergetic process between Pt-CeO and InO-CeO. The relative ratio of these two processes played a decisive role in determining the product distribution. The direct process improved methanol conversion while maintaining low CO selectivity. However, a decrease in catalytic stability was attributed to the agglomeration and sintering of the InO phase, leading to the conversion of Pt-InO-CeO into Pt-CeO. To address the challenge of balancing methanol conversion/catalytic stability and CO selectivity, it was crucial to enhance Pt-InO-CeO sites and preserve their stability. Furthermore, the structural properties of the support played a significant role in governing the distributions and states of Pt and InO phases. Specifically, the use of CeO (0.5 °C min) support resulted in a substantial increase in Pt-InO-CeO and effectively mitigated the sintering of InO phases, ensuring the stability of Pt-InO-CeO. In conclusion, our work elucidated the intricate relationships among the structural properties of CeO supports, the distributions and states of Pt and InO phases, and MSR performance over Pt-InO/CeO catalysts, which hold promise for advancing the development of high-performance MSR catalysts.

Direct/synergetic processes Methanol steam reforming Pt-In2O3/CeO2 catalysts Support structural properties

SCI ; EI

英语

第一

ENGINEERING

2-s2.0-85181819530

Scopus

1.Department of Chemistry,College of Science,Southern University of Science and Technology,Shenzhen,1088 Xueyuan Avenue,518055,China
2.College of Chemical and Environmental Engineering,Anyang Institute of Technology,Anyang,Henan,455000,China
3.State Power Investment Corporation Hydrogen Energy Co.,Ltd,Beijing,100162,China
4.Shenzhen Gas Group Co Ltd.,Shenzhen,518055,China
5.College of Innovation and Entrepreneurship,Southern University of Science and Technology,Shenzhen,518055,China
6.Guangdong Provincial Key Laboratory of Catalysis,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Liu，Xue,Wang，Kai,Cao，Daofan,et al. Insights into direct/synergetic processes for high-efficiency steam reforming of methanol over Pt-In2O3/CeO2 catalysts: The effect of support structural properties[J]. Fuel,2024,362.

Liu，Xue.,Wang，Kai.,Cao，Daofan.,Li，Chao.,Wang，Lipeng.,...&Liu，Ke.(2024).Insights into direct/synergetic processes for high-efficiency steam reforming of methanol over Pt-In2O3/CeO2 catalysts: The effect of support structural properties.Fuel,362.

Liu，Xue,et al."Insights into direct/synergetic processes for high-efficiency steam reforming of methanol over Pt-In2O3/CeO2 catalysts: The effect of support structural properties".Fuel 362(2024).