CAJ | 학술논문

　　通过离子交换法以分子筛为原料进行稀土元素Ce的改性，并负载贵金属Pd制备出整体式催化剂材料，利用对比实验考察了改性分子筛的孔结构、储氧量、低温碳氢吸附活性、台架储氧能力和催化活性。采用低温氮吸附(BET)、程序升温还原(TPR)、台架性能测试(AFR)和台架储氧能力(OSC)进行了表征。结果表明，改性分子筛在比表面积、孔容上有所下降，但是提高了催化剂低温碳氢的吸附活性、台架储氧能力、储氧量和催化活性。
　　통과리자교환법이분자사위원료진행희토원소Ce적개성，병부재귀금속Pd제비출정체식최화제재료，이용대비실험고찰료개성분자사적공결구、저양량、저온탄경흡부활성、태가저양능력화최화활성。채용저온담흡부(BET)、정서승온환원(TPR)、태가성능측시(AFR)화태가저양능력(OSC)진행료표정。결과표명，개성분자사재비표면적、공용상유소하강，단시제고료최화제저온탄경적흡부활성、태가저양능력、저양량화최화활성。
Molecular sieve was modified by ion exchange process with Ce and monolithic catalyst loading Pd was prepared with the sieve. Investigations of pore structure, oxygen storage capacity, low temperature hydrocarbon adsorption activity, bench oxygen storage capacity and catalytic activity of modified molecular sieve were carried out. The experimental results of BET, TPR, AFR and OSC indicated that the surface area and pore volume were decreased but the low temperature HC adsorption, oxygen storage capacity and catalytic activity were improved.