Vinh Tran Quang, Nam Le Thi Hoai, Nhiem Nguyen Thi, Duc Pham Minh, Trang Nguyen Thi Thu, Hieu Do Trung
Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi, 10000, Vietnam.
Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi, 10000, Vietnam.
J Nanosci Nanotechnol. 2018 Feb 1;18(2):1396-1402. doi: 10.1166/jnn.2018.14200.
ZSM-5/SBA-15 composite materials with different acidities and mesoporous system formations were successfully synthesized by three-step method. The catalysts were characterized by XRD, HR-TEM, BET, EDX and TPD-NH3 methods. It showed that the Si/Al molar ratio had effect on the formation and property of materials. Among synthesized catalysts with the different Si/Al molar ratios of 30 (HZSC-30), 50 (HZSC-50), 70 (HZSC-70), HZSC-50 catalyst had better mesoporous system formation and acidity. These properties helped this catalyst to have higher catalytic activity in 1,3,5-triisopropylbenzene cracking reaction than other studied catalysts in term of higher benzene product yield. In comparison to HZSM-5 microporous material that had the similar Si/Al molar ratio of 50, it showed that the formation of mesopore system of HZSC-50 catalyst had a major improvement on the cracking catalytic activity.
采用三步法成功合成了具有不同酸度和介孔体系结构的ZSM-5/SBA-15复合材料。通过XRD、HR-TEM、BET、EDX和TPD-NH₃方法对催化剂进行了表征。结果表明，硅铝摩尔比对材料的形成和性能有影响。在合成的不同硅铝摩尔比为30（HZSC-30）、50（HZSC-50）、70（HZSC-70）的催化剂中，HZSC-50催化剂具有更好的介孔体系结构和酸度。就苯产物收率较高而言，这些性质有助于该催化剂在1,3,5-三异丙基苯裂解反应中比其他研究的催化剂具有更高的催化活性。与具有相似硅铝摩尔比50的HZSM-5微孔材料相比，结果表明HZSC-50催化剂介孔体系的形成对裂解催化活性有显著改善。
