论文部分内容阅读
介绍了丙烷在Zn/Al-CLM催化剂上芳构化反应活性 ,并与Zn/HZSM - 5催化剂进行了比较。结果表明 ,丙烷在Zn/Al-CLM催化剂上的芳构化反应转化率为 1 6 .86 % ,芳烃选择性为 2 7.40 % ;而Zn/HZSM - 5催化剂的丙烷芳构化反应转化率为 49.0 1 % ,芳烃选择性为 57.30 %。这种差异主要是由于Al-CLM和HZSM - 5两种载体的酸性特征及孔结构不同所造成的。此外还发现 ,在Zn/Al-CLM催化剂上 ,C3烷烃芳构化主要转化为苯 ;而在Zn/HZSM - 5催化剂上C3芳构化主要转化为甲苯。为了改善Zn/Al-CLM催化剂的C3烷烃芳构化性能 ,研制了双金属催化剂。结果表明 ,GaZn/Al-CLM催化剂的丙烷芳构化反应转化率为 30 .1 8% ,芳烃选择性为 65 .91 % ;PtZn/Al-CLM催化剂的丙烷芳构化反应转化率为 38.37% ,芳烃选择性为 57.87%。
The aromatization activity of propane on Zn / Al-CLM catalyst was introduced and compared with that of Zn / HZSM - 5 catalyst. The results showed that the aromatization reaction rate of propane on Zn / Al-CLM catalyst was 16.686% and the selectivity to aromatics was 2.70%. Propane aromatization reaction rate of Zn / HZSM - 5 catalyst was 49.0 1%, aromatic selectivity of 57.30%. The difference was mainly attributed to the difference in acidity and pore structure between the two carriers of Al-CLM and HZSM-5. In addition, it was also found that the aromatization of C3 alkane was mainly converted to benzene on Zn / Al-CLM catalyst, whereas the aromatization of C3 was mainly converted to toluene on Zn / HZSM - 5 catalyst. In order to improve the C3 alkane aromatization performance of Zn / Al-CLM catalysts, bimetallic catalysts were developed. The results showed that the conversion of propane aromatization of GaZn / Al-CLM was 30.18% and the selectivity to aromatics was 65.91%. The propane aromatization of PtZn / Al-CLM was 38.37% , Aromatics selectivity of 57.87%.