Boosting reverse water-gas shift reaction activity of Pt nanoparticles through light doping of W

被引：23

作者：

Kobayashi, Daiya ^{[1
,2
]}

Kobayashi, Hirokazu ^{[2
]}

Kusada, Kohei ^{[2
,3
]}

Yamamoto, Tomokazu ^{[4
,5
]}

Toriyama, Takaaki ^{[5
]}

Matsumura, Syo ^{[4
,5
]}

Kawaguchi, Shogo ^{[6
]}

Kubota, Yoshiki ^{[7
]}

Haneda, Masaaki ^{[8
,9
]}

Aspera, Susan Menez ^{[10
]}

Nakanishi, Hiroshi ^{[10
]}

Arai, Shigebumi ^{[1
]}

Kitagawa, Hiroshi ^{[2
]}

机构：

[1] Nippon Soda Co Ltd, Chiba Res Ctr, 12-54 Goi Minamikaigan, Ichihara, Chiba 2900045, Japan

[2] Kyoto Univ, Grad Sch Sci, Div Chem, Sakyo Ku, Kitashirakawa Oiwakecho, Kyoto 6068502, Japan

[3] Kyoto Univ, Hakubi Ctr Adv Res, Sakyo Ku, Kitashirakawa Oiwakecho, Kyoto 6068502, Japan

[4] Kyushu Univ, Dept Appl Quantum Phys & Nucl Engn, Grad Sch Engn, Nishi Ku, Motooka 744, Fukuoka 8190395, Japan

[5] Kyushu Univ, Ultramicroscopy Res Ctr, Nishi Ku, Motooka 744, Fukuoka 8190395, Japan

[6] Japan Synchrotron Radiat Res Inst JASRI, SPring 8,1-1-1 Kouto,Sayo Cho, Sayo, Hyogo 6795198, Japan

[7] Osaka Prefecture Univ, Grad Sch Sci, Dept Phys Sci, Sakai, Osaka 5998531, Japan

[8] Nagoya Inst Technol, Adv Ceram Res Ctr, 10-6-29 Asahigaoka, Tajimi, Gifu 5070071, Japan

[9] Nagoya Inst Technol, Frontier Res Inst Mat Sci, Showa Ku, Gokiso Cho, Nagoya, Aichi 4658555, Japan

[10] Akashi Coll, Natl Inst Technol, 679-3 Nishioka, Akashi, Hyogo 6748501, Japan

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2021年 / 9卷 / 28期

关键词：

CO2; HYDROGENATION; CATALYSTS; REDUCTION; MECHANISM;

D O I：

10.1039/d1ta03480d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The reverse water-gas shift (RWGS) reaction is an important reaction from the viewpoint of converting CO2 into CO as an important raw material compound. As the RWGS reaction is a mildly endothermic and competitive reaction with CO2 methanation, it is important to improve the activity at low temperatures. Here, we report PtW nanoparticles (NPs) supported on gamma-Al2O3 (PtW NPs/Al2O3) in which Pt and W were randomly mixed for obtaining a highly active and selective catalyst for the RWGS. At low temperatures of 200 and 300 degrees C, PtW NPs/Al2O3 exhibited 16- and 17-times higher activity than Pt/Al2O3, one of the most promising catalysts. The enhanced activity of PtW NPs originated from alloying Pt with W, which contributes to the sintering resistance of Pt NPs, and promotion of CO2 adsorption and CO desorption on the catalyst. Furthermore, PtW NPs/Al2O3 exhibited high durability and excellent catalytic performance.

引用

页码：15613 / 15617

页数：5

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