Tuning the hydrophobicity of ZSM-5 zeolites by surface silanization using alkyltrichlorosilane

Modified ZSM‐5/polydimethylsiloxane mixed matrix membranes for ethanol/water separation via pervaporation

“…5i and j). It was shown in our previous work that a very hydrophobic surface layer was formed on the ZSM-5 particles' surface after DDTS modification [17,23] thus improving the interfacial adhesion of ZSM-5 particles and PDMS matrix. Therefore, the silane modification was an effective method to significantly improve the interfacial adhesion and inhibit the interfacial void between ZSM-5 particles and PDMS matrix.…”

“…In our previous work [17], we reported the enhancement of the hydrophobicity of ZSM-5 particles by alkyltrichlorosilane modification.…”

A comparative study on the catalytic performance of different types of zeolites for biodiesel production

“…Meanwhile, the peak observed at 877 cm À1 was due to the P-O-H stretching, verifying that the phosphorus was introduced into the zeolite frameworks [25]. Moreover, the absorption peak near 3610 cm À1 in the spectrum of ZRP-5 (50) was stronger than that of ZSM-5 (50), which suggested that the amount of terminal hydroxyl groups of ZRP-5 (50) was more than ZSM-5 (50) [18], making the ZRP-5 (50) more hydrophilic than ZSM-5 (50), as verified by the contact angle measurement (see below). Fig.…”

“…Konno et al [17] used the Thiele modulus and the effectiveness factor to study the influence of mass transfer limitation. Han et al [18] studied the wetting state on the surface of ZSM-5 zeolites using Cassie-Baxter model. However, to investigate the influence of pore size and hydrophobicity on catalysis performance of zeolites, there were few reports discussing the correlation between mass transfer model, wetting state model and kinetic model.…”

Improved performance of PDMS/silicalite-1 pervaporation membranes via designing new silicalite-1 particles

“…However, it was well known that silicalite-1 (OH) was covered by various types of silanol groups [22][23][24]. The presence of silanol groups seriously reduced the interaction between silicalite-1 and polymer and increased the adsorption to water.…”