Bất đối hóa Toluen trên Zeolit Hzsm-5 biến tính bằng SiO2 và xử lí hơi nước

Abstract

Dispropotionation of toluene at 450°c over HZSM-5 catalyst modified by silicon source and steamed was investigated with respect to high para - xilene content in the reaction products. HZSM-5 molercular sieve has been modified by Si02 and steamed which is an efficient p-xilene selecting agent. The selectivity of p-xilene over the catalyst was high (60,3%). The selecting value of p-xylene isomers equilibrium would be expected for higher.