摘要 |
<p>Modified molecular sieve characterized by improved sodium-resisting contamination activity and preparation method thereof are provided. The method comprises: adding molecular sieve in phosphorus-containing organic solution, and reacting for 10-200 minutes at temperature of 70-200? and pressure of 0.2-1.2 MPa, and then filtering, drying and calcining. The said modified molecular sieve contains 90-99 wt.% molecular sieve as dry basis and 1-10 wt.% phosphorus as oxide. The said method can improve the capability of sodium-resisting contamination effectively, and its technology is simple and fits the existing catalyst production apparatus and process. The said modified molecular sieve has high sodium-resisting contamination activity, and the model catalyst by sodium contamination has high activity retention.</p> |
申请人 |
PETROCHINA COMPANY LIMITED;GAO, XIONGHOU;JI, DONG;ZHANG, HAITAO;DUAN, HONGCHANG;LI, DI;TAN, ZHENGGUO;SU, YI;ZHANG, CHENXI;WANG, YI;MA, YANQING;SUN, YANBO |
发明人 |
GAO, XIONGHOU;JI, DONG;ZHANG, HAITAO;DUAN, HONGCHANG;LI, DI;TAN, ZHENGGUO;SU, YI;ZHANG, CHENXI;WANG, YI;MA, YANQING;SUN, YANBO |