Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N

Corresponding author | Institute | |
BAO Weiren | State Key Laboratory breeding Base of Coal Science and Technology, Taiyuan University of Technology |
Adsorption performances of MCM-41,SBA-15 and NaY zeolites for cyclohexane,benzene,thiophene and tetrahydrothiohene were investigated by static adsorption experiments.The influences of pore structure and surface acid sites on adsorption activity of sorbents were discussed.The results show that,the adsorption capacity of MCM 41 towards these four adsorbates is higher than that by SBA-15 zeolite because of the larger surface area and pore volume of MCM-41 zeolite.NaY zeolite has both Lewis and Br(o)nsted acid sites on its surface,and its pore size is close to the dynamic diameter of cyclohexane,benzene,thiophene,and tetrahydrothiophene molecules,which results in the significantly larger adsorption capacity of NaY than that of MCM-41 and SBA-15.Moreover,the interaction between conjugated π bond and Lewis acid sites contributes a lot to the adsorption performance of NaY zeolite,and the adsorption capacity follows the descending order of thiophene,tetrahydrothiophene,benzene,and cyclohexane.Whereas,the interaction between the lone pair electrons of S atom and Bronsted acid sites contributes more to the adsorption performance of MCM-41 and SBA-15 zeolites,and the desscending adsorption capacity order is tetrahydrothiophene,thiophene,benzene,and cyclohexane. |