CVD modified KL zeolite supported Pt for n-hexane aromatization

✍ Scribed by Jian Zheng; Yuan Chun; Jialu Dong; Qinhua Xu

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 141 KB
• Volume: 130
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(97)00218-5

✦ Synopsis

Modification of non-acidic KL zeolite by chemical vapor deposition CVD of Si OEt and CH Si-O-Si CH 4 3 3 3 3

followed by Pt loading was used to study the influence of zeolite support on the aromatization of n-hexane. Deposited on the framework oxygen ions of the non-acidic zeolite, the silica layer effectively narrowed the pores of KL zeolite. But owing to Ž . the appearance of new basic sites, such as potassium oxide K O , the interaction between Pt metal and zeolite support was 2 strengthened, causing Pt particles to be more electron-excess. n-Hexane pulse-flow microreactions were carried out to study the effects on the aromatization reactivity and sulfur poisoning properties. q 1998 Elsevier Science B.V.