Adsorption properties of an adsorbent or a catalyst towards adsorbates are crucial in the process of adsorption separation or catalytic reaction. Surface morphology and structure of adsorbents have a significant impact on the adsorption properties. In this study

a novel acidic ionic liquid

1-butyl-3-(triethoxysilylpropyl)imidazolium hydrogen sulfate (i.

e

.

[BTPIm

]

[HSO

4

]

)

was synthesized and subsequently grafted onto the MCM-36 zeolite for the regulation of its adsorption properties towards isobutane and 1-butene. The resultant[BTPIm

]

[HSO

4

]

-immobilized MCM-36 (i.

e

.

MCM-36-IL) was characterized by FT-IR

XPS

XRD

SEM

TG/DTG and N

2

adsorption-desorption measurement. It was found that the specific surface area

micropore volume and mesopore volume of the MCM-36 support underwent a reduction upon the immobilization of ionic liquid

while the surface density of acid increased from 0.0014 to 0.0035 mmol·m

-2

. The adsorption capacity of isobutane and 1-butene on the MCM-36-IL was determined by a static volumetric method. Results demonstrated that the interaction between isobutane and MCM-36-IL was enhanced and the interactio

n between 1-butene and MCM-36-IL was reduced. As a result

a tunable adsorption ratio of isobutane/1-butene on MCM-36 was achieved. With the increase in surface density of acid and the tunable adsorption ratio of isobutane and 1-butene on the functionalized MCM-36

the acidic ionic liquid-immobilized zeolites are beneficial to obtain an improved reaction yield and a prolonged catalyst life in the reactions catalyzed by solid acid.