Preparation of Co0.5Cu0.5/CNR catalyst and its performance in hydrogen production by hydrolysis of ammonia borane

Q3 Energy

燃料化学学报 Pub Date : 2024-09-01 DOI:10.1016/S1872-5813(24)60442-1

ZUO Youhua , LI Rong , HUA Junfeng , HAO Siyu , XIE Jing , XU Lixin , YE Mingfu , WAN Chao

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引用次数: 0

Abstract

Cobalt nitrate and copper nitrate was mixed to prepare solution A. Phenyldicarboxylic acid and N,N-dimethylformamide was mixed to prepare solution B. Co/Cu Lavashield skeleton series materials (Co/Cu-MIL precursors) was then synthesized by mixing the above two solution via solvothermal method. The precursor was further carbonized to produce the MOFs derivatives, i.e. bimetallic carbon nanorods (Co_xCu_1–x/CNR) catalysts. The morphology and composition of the catalysts were explored by SEM, TEM, XRD, XPS and other characterization means. The results showed that Co_xCu_1–x/CNR was successfully obtained after calcination of Co/Cu-MIL at high temperature. The activity of the catalyst was optimal when x=0.5, the solvothermal temperature of 120 °C and the calcination temperature of 650 °C. The TOF value of the Co_0.5Cu_0.5/CNR catalyst for the hydrolysis of ammonia borane for the production of hydrogen was 2718.21 h^–1 with activation energy of 51.64 kJ/mol. The catalyst had good cyclic stability. Although the activity decreased, the conversion of AB still maintained 100% after 10 cycles.

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Co0.5Cu0.5/CNR 催化剂的制备及其在硼烷氨水解制氢中的性能

将硝酸钴和硝酸铜混合，制备溶液 A；将苯二甲酸和 N,N-二甲基甲酰胺混合，制备溶液 B；然后通过溶热法将上述两种溶液混合，合成 Co/Cu Lavashield 骨架系列材料（Co/Cu-MIL 前驱体）。将前驱体进一步碳化，生成 MOFs 衍生物，即双金属碳纳米棒（CoxCu1-x/CNR）催化剂。通过 SEM、TEM、XRD、XPS 等表征手段对催化剂的形态和组成进行了研究。结果表明，高温煅烧 Co/Cu-MIL 后成功获得了 CoxCu1-x/CNR。当 x=0.5、溶热温度为 120 ℃、煅烧温度为 650 ℃时，催化剂的活性最佳。Co0.5Cu0.5/CNR 催化剂水解硼烷氨生产氢气的 TOF 值为 2718.21 h-1，活化能为 51.64 kJ/mol。催化剂具有良好的循环稳定性。虽然活性有所下降，但 10 个循环后 AB 的转化率仍保持在 100%。

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来源期刊

燃料化学学报 Chemical Engineering-Chemical Engineering (all)

CiteScore

2.80

自引率

0.00%

发文量

5825

期刊介绍： Journal of Fuel Chemistry and Technology (Ranliao Huaxue Xuebao) is a Chinese Academy of Sciences(CAS) journal started in 1956, sponsored by the Chinese Chemical Society and the Institute of Coal Chemistry, Chinese Academy of Sciences(CAS). The journal is published bimonthly by Science Press in China and widely distributed in about 20 countries. Journal of Fuel Chemistry and Technology publishes reports of both basic and applied research in the chemistry and chemical engineering of many energy sources, including that involved in the nature, processing and utilization of coal, petroleum, oil shale, natural gas, biomass and synfuels, as well as related subjects of increasing interest such as C1 chemistry, pollutions control and new catalytic materials. Types of publications include original research articles, short communications, research notes and reviews. Both domestic and international contributors are welcome. Manuscripts written in Chinese or English will be accepted. Additional English titles, abstracts and key words should be included in Chinese manuscripts. All manuscripts are subject to critical review by the editorial committee, which is composed of about 10 foreign and 50 Chinese experts in fuel science. Journal of Fuel Chemistry and Technology has been a source of primary research work in fuel chemistry as a Chinese core scientific periodical.