2-Ethyl-9,10-anthraquinone assisted sol-gel synthesis of Pd/γ-Al2O3 nanorods with enhanced catalytic performance in 2-ethyl-9,10-anthraquinone hydrogenation

doi:10.1016/j.cjche.2019.01.003

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (8): 1863-1869.DOI: 10.1016/j.cjche.2019.01.003

2-Ethyl-9,10-anthraquinone assisted sol-gel synthesis of Pd/γ-Al₂O₃ nanorods with enhanced catalytic performance in 2-ethyl-9,10-anthraquinone hydrogenation

Weiquan Cai^1,2, Junlin Zhuo¹, Jimin Fang³, Zhichao Yang^1,2

1 School of Chemistry and Chemical Engineering, Guangzhou University, 230 Guangzhou University City Outer Ring Road, Guangzhou 510006, China;
2 School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China;
3 School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China

收稿日期:2018-10-20 修回日期:2019-01-01 出版日期:2019-08-28 发布日期:2019-11-16
通讯作者: Weiquan Cai
基金资助:
Supported by the 2016 Wuhan Yellow Crane Talents (Science) Program, and One Hundred Talents Project of Guangzhou University (No. 69-18ZX10016).

2-Ethyl-9,10-anthraquinone assisted sol-gel synthesis of Pd/γ-Al₂O₃ nanorods with enhanced catalytic performance in 2-ethyl-9,10-anthraquinone hydrogenation

Weiquan Cai^1,2, Junlin Zhuo¹, Jimin Fang³, Zhichao Yang^1,2

1 School of Chemistry and Chemical Engineering, Guangzhou University, 230 Guangzhou University City Outer Ring Road, Guangzhou 510006, China;
2 School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China;
3 School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China

Received:2018-10-20 Revised:2019-01-01 Online:2019-08-28 Published:2019-11-16
Contact: Weiquan Cai
Supported by:
Supported by the 2016 Wuhan Yellow Crane Talents (Science) Program, and One Hundred Talents Project of Guangzhou University (No. 69-18ZX10016).

摘要/Abstract

摘要： A series of nanorod-like porous Pd/γ-Al₂O₃ catalysts with controllable textural properties and enhanced catalytic performance in 2-ethyl-9,10-anthraquinone (eAQ) hydrogenation for H₂O₂ preparation were successfully prepared via a facile sol-gel method using aluminum isopropoxide as aluminum precursor and eAQ as structure directing agent, sequential calcination and impregnation process with Na₂PdCl₄ solution. The physicochemical properties of the catalysts obtained with different addition amounts of eAQ were comparatively characterized by XRD, TG-DSC, BET, TEM, CO-TPR, H₂-TPR and H₂-O₂ titration. The results show that addition of eAQ can not only effectively control the textural properties (surface area, pore volume and average pore size) of the catalysts, but also lower their reduction temperature of active metal. Importantly, the catalyst obtained with an addition amount of 4 wt% eAQ shows the highest hydrogenation efficiency of 10.28 g·L^-1, which is 37.3% higher than 7.49 g·L^-1 of the catalyst obtained without eAQ.

关键词: Catalyst, Hydrogenation, Alumina, 2-Ethyl-9,10-anthraquinone, Structure directing agent, H₂O₂

Abstract: A series of nanorod-like porous Pd/γ-Al₂O₃ catalysts with controllable textural properties and enhanced catalytic performance in 2-ethyl-9,10-anthraquinone (eAQ) hydrogenation for H₂O₂ preparation were successfully prepared via a facile sol-gel method using aluminum isopropoxide as aluminum precursor and eAQ as structure directing agent, sequential calcination and impregnation process with Na₂PdCl₄ solution. The physicochemical properties of the catalysts obtained with different addition amounts of eAQ were comparatively characterized by XRD, TG-DSC, BET, TEM, CO-TPR, H₂-TPR and H₂-O₂ titration. The results show that addition of eAQ can not only effectively control the textural properties (surface area, pore volume and average pore size) of the catalysts, but also lower their reduction temperature of active metal. Importantly, the catalyst obtained with an addition amount of 4 wt% eAQ shows the highest hydrogenation efficiency of 10.28 g·L^-1, which is 37.3% higher than 7.49 g·L^-1 of the catalyst obtained without eAQ.

Key words: Catalyst, Hydrogenation, Alumina, 2-Ethyl-9,10-anthraquinone, Structure directing agent, H₂O₂

Weiquan Cai, Junlin Zhuo, Jimin Fang, Zhichao Yang. 2-Ethyl-9,10-anthraquinone assisted sol-gel synthesis of Pd/γ-Al₂O₃ nanorods with enhanced catalytic performance in 2-ethyl-9,10-anthraquinone hydrogenation[J]. 中国化学工程学报, 2019, 27(8): 1863-1869.

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2-Ethyl-9,10-anthraquinone assisted sol-gel synthesis of Pd/γ-Al₂O₃ nanorods with enhanced catalytic performance in 2-ethyl-9,10-anthraquinone hydrogenation

2-Ethyl-9,10-anthraquinone assisted sol-gel synthesis of Pd/γ-Al₂O₃ nanorods with enhanced catalytic performance in 2-ethyl-9,10-anthraquinone hydrogenation

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