孙元明,周媛媛,崔用武,顾军.硼氢化钠制氢催化剂的表面改性处理[J].表面技术,2010,39(4):36-38,68.
SUN Yuan-ming,ZHOU Yuan-yuan,CUI Yong-wu,GU Jun.Surface Modification Treatment Technique for Hydrogen Generation Catalysts of Boron Sodium Hydride[J].Surface Technology,2010,39(4):36-38,68 |
| 硼氢化钠制氢催化剂的表面改性处理 |
| Surface Modification Treatment Technique for Hydrogen Generation Catalysts of Boron Sodium Hydride |
| 投稿时间：2010-03-15 修订日期：2010-08-10 |
| DOI： |
| 中文关键词: 氟化处理 镍还原 水解制氢 催化剂 表面改性 |
| 英文关键词:fluoridation Ni reduction hydrogen generation catalysts surface modification |
| 基金项目:江苏省2008年科技支撑计划(BE2008040) |
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| 中文摘要: |
| 在硼氢化钠催化水解制氢反应过程中,催化剂的表面活性以及比表面积的大小直接影响催化效果。采用氟化处理法对催化剂Mg2Ni合金粒子进行表面改性,并对氟化处理后的催化剂进行镍还原处理。研究了改性前后合金粒子表面结构、形态、元素分布及催化性能的变化,结果表明:氟化处理明显改善了合金粒子的表面构造,显著增大了比表面积;经过氟化处理的合金,其催化效果约为未处理合金的4倍;再进行镍的还原处理,催化剂的活性可进一步提高,且与镍还原量成正比关系。 |
| 英文摘要: |
| In the process of hydrogen generation by catalytic hydrolysis of sodium borohydride, the surface activity and the specific surface area of the catalysts directly effect on the reaction rate. With a chemical method——— fluoride treatment, the alloy particle of catalysts Mg2Ni was surface modified by fluridation and the catalysts treated by fluoridation was treated by Ni reduction. The structure,morphology,elemental distribution of the alloy surface before and after modification were studied. The result shows that the surface structure is significantly improved and the specific surface area isincreased by fluoride treatment. The catalytic activity of the sample with fluoride treatmentisincreased by 4 times compared with the untreated catalyst.Further studies show that reduction of Ni also affects the activity which is proportional to the amount of Ni reduction. |
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