摘要
为了降低FCC汽油中的硫的质量分数,分别考察了3种不同孔径的HY型和强酸HZSM-5型分子筛对FCC汽油中的噻吩烷基化脱硫反应的催化活性实验.实验分别在较低温度（55～85℃）和较高温度（110～130℃）2种情况下对噻吩烷基化进行研究,考察了温度、催化剂酸强度、孔径等因素对噻吩烷基化的影响.经过分析得出,在较低温度下,温度是制约噻吩烷基化的首要因素,酸强度和孔径影响很小;在较高温度下,催化剂的孔径则是制约噻吩烷基化的首要因素.
In order to reduce the sulfur content in gasoline ,the catalytic activity of zeolite catalysts with T-1 ,T-2 ,T- 3 and HZSM-5 active components in alkylation desulfurization reaction is studied. The alkylation of thiophene is carried out at low temperature （ 55 - 85℃ ） and high temperature （ 110 - 130℃ ）, respectively. The effects of temperature, the acidity of the catalysts, pore diameters, ere, on the alkylation of thlophene are investigated. The results show that at low temperature,the temperature is the key factor for alkylation reaction. The alkylation conversions of thiophene for four zeolite catalysts are close to 50% at 80℃ and normal pressure for 1 hour. However,the acidity and pore diameter of the catalyst have little effect on alkylation reactions. At high temperature, the pore diameter plays a crucial role in the alkylation reaction. The catalytic effect of T-1 is the best and the conversion can reach more than 90%.
出处
《现代化工》
CAS
CSCD
北大核心
2015年第2期113-116,共4页
Modern Chemical Industry
关键词
噻吩
烷基化
分子筛
催化剂
温度
酸强度
孔径
thiophene
alkylation
molecular sieve
catalyst
temperature
acidity
pore diameter
