Reactant adsorption modulation by Fe and K in Pt catalyst for highly effective CO preferential oxidation in practical conditions

被引：31

作者：

Cao, Jianlin ^{[1
]}

Zhang, Xiaoqian ^{[1
]}

Ou, Xinxin ^{[1
]}

Liu, Tao ^{[3
]}

Xing, Tao ^{[3
]}

Li, Zhi ^{[3
]}

Zhou, Xin ^{[1
]}

Yan, Hao ^{[1
]}

Liu, Yibin ^{[1
]}

Feng, Xiang ^{[1
]}

Tuo, Yongxiao ^{[2
]}

Yang, Chaohe ^{[1
]}

Chen, De ^{[1
,4
]}

机构：

[1] China Univ Petr, State Key Lab Heavy Oil Proc, Qingdao 266580, Shandong, Peoples R China

[2] China Univ Petr, Coll New Energy, Qingdao 266580, Shandong, Peoples R China

[3] Shandong Energy Grp Co Ltd, Jinan 250000, Shandong, Peoples R China

[4] Norwegian Univ Sci & Technol, Dept Chem Engn, N-7491 Trondheim, Norway

来源：

CHEMICAL ENGINEERING JOURNAL | 2022年 / 444卷

关键词：

CO preferential oxidation; High CO2 selectivity; High temperature window; Platinum catalyst; Adsorption properties; FISCHER-TROPSCH SYNTHESIS; CARBON-MONOXIDE; FUEL-CELLS; HYDROGEN; GAS; SURFACE; NANOPARTICLES; PURIFICATION; METHANATION; PERFORMANCE;

D O I：

10.1016/j.cej.2022.136661

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Developing efficient and stable catalysts for preferential oxidation of CO (CO-PROX) within a wide temperature window is significant for the industrial hydrogen resource purification process. Herein, dual promoters of Fe and K were deliberately introduced to the mordenite supported Pt catalyst for optimizing the adsorption behaviors of reactants in CO-PROX. The optimal 1Pt0.1 K/Fe-MOR catalyst can achieve 100% CO conversion and 60-70% CO2 selectivity (the ratio of CO/O-2 is 1:1) under the realistic application temperature range (130-200 degrees C), and remains catalytically stable during 65 h testing at 140 degrees C. A combination of detailed characterizations and density functional theory (DFT) simulations show that Fe species can avoid the co-adsorption of O-2 on the Pt sites by providing more oxygen vacancy to activate O-2, while K species will further enhance the adsorption of CO and repulse the adsorption of H-2 on Pt surface. Therefore, the optimized adsorption of CO, O-2 and H-2 results in a total CO conversion and high CO2 selectivity in high temperature range.

引用

页数：9

共 68 条

[11] Mechanistic and kinetic insights into the Pt-Ru synergy during hydrogen generation from ammonia borane over PtRu/CNT nanocatalysts [J].

Chen, Wenyao ;

Li, Dali ;

Peng, Chong ;

Qian, Gang ;

Duan, Xuezhi ;

Chen, De ;

Zhou, Xinggui .

JOURNAL OF CATALYSIS, 2017, 356 :186-196

[12] Local structure of Pt species dictates remarkable performance on Pt/Al2O3 for preferential oxidation of CO in H2 [J].

Chen, Yang ;

Lin, Jian ;

Li, Lin ;

Pan, Xiaoli ;

Wang, Xiaodong ;

Zhang, Tao .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2021, 282

[13] THE COADSORPTION OF POTASSIUM AND CO ON THE PT(111) CRYSTAL-SURFACE - A TDS, HREELS AND UPS STUDY [J].

CROWELL, JE ;

GARFUNKEL, EL ;

SOMORJAI, GA .

SURFACE SCIENCE, 1982, 121 (02) :303-320

[14] Interface-Confined Ferrous Centers for Catalytic Oxidation [J].

Fu, Qiang ;

Li, Wei-Xue ;

Yao, Yunxi ;

Liu, Hongyang ;

Su, Hai-Yan ;

Ma, Ding ;

Gu, Xiang-Kui ;

Chen, Limin ;

Wang, Zhen ;

Zhang, Hui ;

Wang, Bing ;

Bao, Xinhe .

SCIENCE, 2010, 328 (5982) :1141-1144

[15] A NEW APPROACH TO THE PROBLEM OF CARBON-MONOXIDE POISONING IN FUEL-CELLS OPERATING AT LOW-TEMPERATURES [J].

GOTTESFELD, S ;

PAFFORD, J .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1988, 135 (10) :2651-2652

[16] Characterization of oxide surfaces and zeolites by carbon monoxide as an IR probe molecule [J].

Hadjiivanov, KI ;

Vayssilov, GN .

ADVANCES IN CATALYSIS, VOL 47, 2002, 47 :307-511

[17] Widening Temperature Window for CO Preferential Oxidation in H2 by Ir Nanoparticles Interaction with Framework Fe of Hexaaluminate [J].

Hong, Bilv ;

Liang, Jin-Xia ;

Sun, Xiucheng ;

Tian, Ming ;

Huang, Fei ;

Zheng, Ying ;

Lin, Jian ;

Li, Lin ;

Zhou, Yanliang ;

Wang, Xiaodong .

ACS CATALYSIS, 2021, 11 (09) :5709-5717

[18] Hydrogen Adsorption on Platinum-Gold Bimetallic Nanoparticles: A Density Functional Theory Study [J].

Hu, Minmin ;

Linder, Douglas P. ;

Nardelli, Marco Buongiorno ;

Striolo, Alberto .

JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (29) :15050-15060

[19] Recent advances in synergistic effect promoted catalysts for preferential oxidation of carbon monoxide [J].

Jing, Peng ;

Gong, Xia ;

Liu, Baocang ;

Zhang, Jun .

CATALYSIS SCIENCE & TECHNOLOGY, 2020, 10 (04) :919-934

[20] KOH-promoted Pt/Al2O3 catalysts for water gas shift and methanol steam reforming: An operando DRIFTS-MS study [J].

Kaftan, Andre ;

Kusche, Matthias ;

Laurin, Mathias ;

Wasserscheid, Peter ;

Libuda, Joerg .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 201 :169-181

← 1 2 3 4 5 6 7 →