酸预处理对整体式催化剂载体性能的影响研究

通过使用不同浓度，不同类型的酸溶液，在不同条件下对堇青石载体进行预处理，考察了酸预处理前后载体本征性能的改变和对甲苯催化性能的影响，测试了其失重率，吸水率，上载率本征性能，并通过XRF，BET，SEM等手段进行表征测试分析.结果发现，通过使用20% HCl对堇青石载体进行加热处理3h，可获得最优性能的堇青石载体.吸水率较处理前可提升48.0%以上，活性组分上载率可达14.5%，皮尔逊检验表明吸水率与上载率存在中度正相关的相关性.通过对甲苯催化活性测试，其结果表明，通过酸预处理，堇青石载体比表面积提升10倍以上，由其制得的整体式催化剂催化降解甲苯的T₁₀和T₉₀分别为142和200℃.

Influence of acid pretreatment on the performance of monolithic catalyst support

In this study, different concentration and different types of acid solution was used for the cordierite pretreatment. The changes of basic performance before and after the pretreatment and the performance of the catalytic degradation of toluene were examined. The weightlessness rate, the rate of water absorption and upload rate of cordierite were also tested. XRF, BET, SEM characterization methods were used for the assessment of cordierite. The best cordierite carrier in our experiment could be obtained by heating with 20%HCl for 3h. The water absorption rate increased by more than 48.0% compared with that before treatment, the upload rate could reach 14.5%. A moderate positive correlation between water absorption and upload rate was assumed by the pearson test. The characterization results showed that the specific surface area could increase with more than 10times through acid treatment. The T₁₀ and T₉₀ of catalytic degradation of toluene were 143℃ and 200℃, respectively.