摘要
碳纤维用于环境保护、污染治理是个重要课题。采用浸渍法研制系列钯负载活性碳纤维 ,研究了它们对NO的歧化分解性能 ,并与其它载体催化剂进行比较 ,实验结果表明负载钯活性碳纤维在 30 0℃以上能催化NO的歧化分解。负载钯活性炭和负载钯炭黑分解NO的能力明显比前者弱。石墨和分子筛载体负载钯催化剂在40 0℃仍没有催化分解NO的作用。催化反应温度升高、NO流量降低、钯负载量增加有利于NO分解率提高。采用钯
The catalyst of palladium-loaded activated carbon ber (ACF-Pd) was prepared by immersion method. Compared with other carrier catalysts, the catalytic property of the ACF-Pd for the decomposition of NO was investigated. The experimental results show that the ACF-Pd can catalyze the dismutation decomposition of NO with high conversion rate at >300℃. But relative catalysts of palladium loaded on activated carbon and carbon black present weak catalytic ability and low conversion rate at the same conditions. Whereas, the catalysts of palladium loaded on graphite and molecular sieve do not have any catalytic activity for the decomposition of NO even at 400℃. The increases of reaction temperature and loadage of palladium or the decreases of NO flowrate can increase the decomposition conversion rate of NO. Mixing some copper compounds to palladium solution to obtain ACF-Pd/Cu composite catalyst can increase the catalytic ability of the catalyst and reduce the amount of palladium used.
出处
《环境技术》
2001年第5期41-46,共6页
Environmental Technology
基金
广东省自然科学基金重点项目 (9630 5 4 )
高等学校骨干教师资助计划项目
广东省团队项目资助
