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OALib Journal期刊
ISSN: 2333-9721
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负载型ni-co-p/cnfs催化剂的制备及释氢性能
, PP. 372-378
Keywords: 化学镀,镍-钴-磷,纳米碳纤维,硼氢化钠,氢气释放
Abstract:
？以纳米碳纤维(cnfs)为基体材料,采用化学镀法在cnfs表面沉积了ni-co-p催化剂。研究了催化剂用量,硼氢化钠、氢氧化钠浓度,温度等对碱性硼氢化钠溶液水解释氢的影响。电感耦合等离子体原子发射光谱法(icp-aes)测试得出负载型ni-co-p催化剂含镍13.30%(质量分数,下同)、钴82.25%、磷4.45%。硼氢化钠水解释氢实验结果表明,产氢速率与催化剂用量呈线性关系。当温度为45℃、催化剂浓度为7.5g/l、氢氧化钠浓度为5%、硼氢化钠浓度为2.5%时,氢气释放速率达到最大值18.044l/(g·min)。通过对负载型催化剂ni-co-p/cnfs催化碱性硼氢化钠溶液释放氢气动力学研究表明,该催化剂的活化能ea为51.57kj/mol。
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