@article{(Open Science Index):https://publications.waset.org/pdf/1387, title = {Improved p-Xylene Selectivity of n-Pentane Aromatization over Silylated Ga-exchanged HZSM- 5 Catalysts}, author = {Tunchanok Nitipan and Siriporn Jongpatiwut and Thirasak Rirksomboon and Boonyarach Kitiyanan and Tivaporn Apphakvan}, country = {}, institution = {}, abstract = {In this study, the conversion of n-pentane to aromatics is investigated on HZSM-5 zeolites modified by Ga ion-exchange and silylation using tetraethyl orthosilicate (TEOS) via chemical liquid deposition (CLD). The effect of SiO2/Al2O3 ratios of HZSM-5 was also studied. Parameters in preparing catalysts i.e. TEOS loading and cycles of deposition were varied to obtain the optimal condition for enhancing p-xylene selectivity. The highest p-xylene selectivity 99.7% was achieved when the amount of TEOS was 20 vol.%.The catalysts were characterized by TPD, TPO, XRF, and BET. Results show that the conversion of n-pentane was influenced remarkably by the SiO2/Al2O3 ratios of HZSM-5. The highest p-xylene selectivity 99.7% was achieved when the amount of TEOS was 20 vol.%. And cycles of deposition greatly improves HZSM-5 shape-selectivity. }, journal = {International Journal of Chemical and Molecular Engineering}, volume = {6}, number = {4}, year = {2012}, pages = {301 - 304}, ee = {https://publications.waset.org/pdf/1387}, url = {https://publications.waset.org/vol/64}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 64, 2012}, }