摘要
制备一系列不同Mn含量的超稳L沸石(Mn-USL沸石),将Mn-USL沸石替代质量分数为5%的REUSY沸石作为催化剂的活性组分,用标准轻油微反方法(MAT)对各催化剂样品进行性能评价,重点考察了添加不同锰含量的USL沸石对催化剂活性、比积炭、气体产物组成、氢转移反应活性、汽油辛烷值等的影响。研究结果表明,裂化催化剂中加入一定量Mn改性的USL沸石后,可以提高催化剂的反应活性,降低比积炭,并可以在降低裂化汽油中烯烃含量的同时提高异构烷烃的含量,汽油的辛烷值变化不大。
Ultra-stable zeolite L samples having various manganese contents （named as Mn-USL） were prepared, and catalyst samples using REUSY zeolite and 5% Mn-USL as active components were obtained. Comprehensive evaluation was carried out to study the effect of manganese content on the catalyst activity and selectivity by a standard micro-activity test （MAT） unit. The test results showed that the catalyst activity and coke selectivity were improved by the addition of Mn-USL zeolite; the olefin content of the cracked naphtha reduced with the increase of branched paraffin content, subsequently, the RON of the cracked naphtha basically unchanged.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2005年第6期26-30,共5页
Petroleum Processing and Petrochemicals
基金
中国石油化工股份有限公司科学技术研究开发项目资助(J102011)。
