CAJ | 학술논문

用海泡石和高岭土混合物为原料,以原位晶化技术制备催化裂化(FCC)催化剂,考察了海泡石对结晶度、硅铝比和抗钒性能的影响.结果表明掺海泡石的原位晶化产物与未加海泡石相比,结晶度较低,硅铝比较高,海泡石含量在5%～30%范围时,结晶度和硅铝比变化不大.该催化剂水热活性(100%水蒸汽、800℃、17h)较未加海泡石低,但钒污染(质量分数5×10~(-3))后活性保留率却高出25%,抗钒能力较高.
용해포석화고령토혼합물위원료,이원위정화기술제비최화열화(FCC)최화제,고찰료해포석대결정도、규려비화항범성능적영향.결과표명참해포석적원위정화산물여미가해포석상비,결정도교저,규려비교고,해포석함량재5%～30%범위시,결정도화규려비변화불대.해최화제수열활성(100%수증기、800℃、17h)교미가해포석저,단범오염(질량분수5×10~(-3))후활성보류솔각고출25%,항범능력교고.
With kaolin mixed sepiolite as raw materials and by in-situ crystallization a catalyst is prepared for FCC catalyst.The effects of sepiolite on the crystallinity,SiO_2/Al_2O_3 and anti-vanadium performance are investigated.The results show that the in-situ crystallized product with sepiolite has lower crystallinity and higher Si/Al ratio than those with the none-sepiolite,and the crystallinity and SiO_2/Al_2O_3 ratio change a little with the sepiolite content between 5%-30%.Under the condition as 100% of water vapor,800℃ and 17 hours,the activity of the FCC catalyst with sepiolite is lower than that without sepiolite,but the activity retention rate can be 25% higher after polluted with 5 000 ppm of vanadium compared with that without sepiolite,which shows that the catalyst with sepiolite has high anti-vanadium performance.