Partial Oxidation of Methane to Syngas over Pt/Al2O3and Pt/CeO2/Al2O3

Abstract

Abstract: The catalytic oxidation of methane to syngas has been carried out over Pt/Al₂O₃and Pt/CeO₂/Al₂O_3.It was found that the catalysts with ceria exhibit a higher activity and selectivity than those without ceria. The catalysts were characterized by means of TPR, TPD, SEM EDX and XRD. There is a strong interaction between ceria and platinum under the reaction condition, which increase the dispersion of platinum over catalysts, preventing the sinter of the Pt particles. As a result of the synergistic effect between Pt and ceria, the activity of Pt/Al₂O₃for combustion reaction was suppressed, the activity and selectivity for partial oxidation were improved greatly. Another role of ceria in the catalyst is the enhancing of the WGSR, which leads to the increase of the selectivity of catalyst for hydrogen and accelerating the equilibrium of the reaction.

Key words: Methane, Catalytic partial oxidation, Syngas, Pt/CeO₂/Al₂O₃

CLC Number:

O643.32

TrendMD:

YAN Qian-Gu, GAO Li-Zhen, YUAN Song-Yue, YU Zuo-Long. Partial Oxidation of Methane to Syngas over Pt/Al₂O₃and Pt/CeO₂/Al₂O₃[J]. Chem. J. Chinese Universities, 1998, 19(8): 1300.

[1]	HE Hongrui, XIA Wensheng, ZHANG Qinghong, WAN Huilin. Density-functional Theoretical Study on the Interaction of Indium Oxyhydroxide Clusters with Carbon Dioxide and Methane [J]. Chem. J. Chinese Universities, 2022, 43(8): 20220196.
[2]	ZHANG Mi, TIAN Yafeng, GAO Keli, HOU Hua, WANG Baoshan. Molecular Dynamics Simulation of the Physicochemical Properties of Trifluoromethanesulfonyl Fluoride Dielectrics [J]. Chem. J. Chinese Universities, 2022, 43(11): 20220424.
[3]	ZHONG Shengguang, XIA Wensheng, ZHANG Qinghong, WAN Huilin. Theoretical Study on Direct Conversion of CH₄ and CO₂ into Acetic Acid over MCu₂O_x（M = Cu²⁺， Ce⁴⁺， Zr⁴⁺） Clusters [J]. Chem. J. Chinese Universities, 2021, 42(9): 2878.
[4]	HU Chuanchuan, PANG Jingxiang, HE Chuangchuang, LI Wei, SUN Shutao. Sc（OTf）₃ Catalyzed 1，6-Conjugate Allylation of δ-CN p-QMs： Synthesis of Allyl Substituted Diarylacetonitrile Compounds [J]. Chem. J. Chinese Universities, 2021, 42(9): 2805.
[5]	LIU Huazheng, PAN Xiaoguang, LI Hua, WAN Renzhong, LIU Xigong. Na₂CO₃-catalyzed 1，6-Conjugate Addition of Trimethylsilyl Azide to δ-CF₃-δ-Aryl-disubstituted Para-Quinone Methides： Efficient Construction of Diarylmethanes Bearing CF₃- and N₃-Substituted Quaternary Stereocenters [J]. Chem. J. Chinese Universities, 2021, 42(9): 2772.
[6]	LI Jian, YU Mingming, SUN Yuan, FENG Wenhua, FENG Zhaochi, WU Jianfeng. Effect of Aqueous Solution pH on the Oxidation of Methane to Methanol at Low Temperature [J]. Chem. J. Chinese Universities, 2021, 42(3): 776.
[7]	SHEN Wenjie. Molecular-fence Catalysts for Low-temperature Oxidation of Methane to Methanol [J]. Chem. J. Chinese Universities, 2020, 41(3): 375.
[8]	WU Hao, WANG Changzhen, QIU Yuan, TIAN Yani, ZHAO Yongxiang. Effect of Steric Confinement Dimension on Metal Site Anti-carbon Deposition Ability of Ni-SiO₂ Catalysts in CH₄-CO₂ Reforming [J]. Chem. J. Chinese Universities, 2020, 41(11): 2488.
[9]	MA Jinyu, LIU Shuanglei, ZHANG Zhenguo, JIN Junyang, JIA Zhenhua. B（C₆F₅）₃-Catalyzed Synthesis of 3，3′-Bisindolylmethane Derivatives [J]. Chem. J. Chinese Universities, 2020, 41(10): 2225.
[10]	RAN Shiya,SHEN Haifeng,LI Xiaonan,WANG Zilu,GUO Zhenghong,FANG Zhengping. Effect and Mechanism of Rare Earth Trifluoromethanesulfonate on the Thermal Stability of Polypropylene^† [J]. Chem. J. Chinese Universities, 2019, 40(6): 1333.
[11]	CHENG Wenmin,XIA Wensheng,WAN Huilin. Influence of Surface Reactivity of Lanthanum Oxide on the Activation of Methane and Oxygen^† [J]. Chem. J. Chinese Universities, 2019, 40(5): 940.
[12]	CHEN Tao,FANG Lei,LUO Wei,MENG Yue,XUE Jilong,XIA Shengjie,NI Zheming. Theoretical Study of Dry Reforming of Methane Catalyzed by Bimetallic Alloy Cluster M₁₂Ni(M=Pt, Sn, Cu) ^† [J]. Chem. J. Chinese Universities, 2019, 40(10): 2135.
[13]	WEI Junyi, GAO Zhihua, HUANG Wei, AI Peipei, YAN Feifei, YOU Xiangxuan. Effect of Structural Ordering on the Performance of Mesoporous Carbon Supported CuCoCe Catalyst in the Synthesis of Higher Alcohols from Syngas^† [J]. Chem. J. Chinese Universities, 2018, 39(8): 1741.
[14]	TONG Bo, ZHANG Zhongxiang, LIU Zhenjie, PENG Zhangquan, ZHOU Zhibin. Novel Electrolyte Containing Li[(CF₃SO₂)(n-C₄F₉SO₂)N] for High Voltage LiNi_0.5Mn_1.5O₄-based Cell^† [J]. Chem. J. Chinese Universities, 2018, 39(7): 1518.
[15]	BAI Yan, XIA Wensheng, WENG Weizheng, LIAN Mengshui, ZHAO Mingquan, WAN Huilin. Influence of Phosphate on La-based Catalysts for Oxidative Coupling of Methane^† [J]. Chem. J. Chinese Universities, 2018, 39(2): 247.

Partial Oxidation of Methane to Syngas over Pt/Al₂O₃and Pt/CeO₂/Al₂O₃

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments