化工新型材料

化工新型材料 ›› 2018, Vol. 46 ›› Issue (1) : 102-105.

新材料与新技术

非晶态合金Ru-B/ZrO₂催化剂催化硼氢化钠水解制氢性能的研究

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Hydrogen generation used amorphous alloy Ru-B/ZrO₂ catalyst from hydrolysis of sodium borohydride

Sun Haijie¹, Huang Zhenxu¹, Wang Yaping¹, Su Manfei¹, Li Yongyu¹, Liu Zhongyi², Liu Shouchang²

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Received
2016-09-05
Issue Date	Revised Date
2018-03-01	2016-09-05

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摘要

采用浸渍还原法制备了负载型非晶态合金Ru-B/ZrO₂催化剂,并考察了ZrO₂织构性质、第四周期过渡金属助剂、催化剂量、反应温度和催化剂循环使用性能对Ru-B/ZrO₂催化剂催化硼氢化钠水解产氢性能的影响。结果表明:随载体ZrO₂比表面积增加,Ru-B/ZrO₂催化剂比表面积增加,活性组分Ru-B比表面积增加,催化剂活性升高。第四周期过渡金属作助剂不利于Ru-B/ZrO₂催化剂催化硼氢化钠产氢速率的提高。载体ZrO₂比表面积为90m²/g,Ru-B/ZrO₂催化剂的比表面积最大为86m²/g。在303K时,0.005g该催化剂催化硼氢化钠水解产氢速率为13264mL/(min·g)(Ru),活化能为35.33kJ/mol。循环使用5次后,催化剂产氢速率仍保持初次速率的88%。

Abstract

A amorphous alloy Ru-B/ZrO₂ catalyst was prepared by impregnation-chemical reduction method,and the effects of texture properties of ZrO₂,the fourth period transition metals as promoter,the catalyst dosage,the reaction temperature and catalyst reusability on the performance of Ru-B/ZrO₂ were investigated.The results showed that the surface area of Ru-B/ZrO₂ increased with increasing that of the support ZrO₂,resulted in the increase of surface area of active component Ru-B and the activity of Ru-B/ZrO₂ catalyst.It was also found that the fourth period transition metals as promoter were not good for improving the activity of Ru-B/ZrO₂ catalyst.When the surface area of support ZrO₂ was 90m²/g,the surface area of Ru-B/ZrO₂ was 86m²/g,When the catalyst dosage was 0.005g at 303k,the hydrogen generation rate can reach 13264 mL/(min·g)(Ru) and the activation energy was 35.33kJ/mol.Moreover,after five reused times this catalyst also maintained the hydrogen rate as high as 88% of initial rate.

关键词

硼氢化钠 / 产氢 / 钌 / 硼 / 二氧化锆

Key words

sodium borohydride / hydrogen generation / Ru / B / ZrO₂

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非晶态合金Ru-B/ZrO₂催化剂催化硼氢化钠水解制氢性能的研究[J]. 化工新型材料, 2018, 46(1): 102-105 DOI:

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