Synthesis and Characterization of ZSM-5 Catalyst at Different Temperatures

2nd Materials Research Society of Indonesia Meeting

Widayat, W.^1,2 ; Annisa, A.N.^2

Laboratory of Advanced Material, Center of Research, Service Diponegoro University, Indonesia^1

Department of Chemical Engineering, Diponegoro University, Jl. Prof. Soedarto SH, Tembalang, Semarang

50275, Indonesia^2

关键词: Calcination time;    Complex production;    Production cost;    Production process;    Synthesis and characterizations;    Synthetic zeolites;    Temperature rise;    Xrd (x ray diffraction);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/214/1/012032/pdf
DOI  :  10.1088/1757-899X/214/1/012032

来源: IOP

【 摘 要 】

ZSM-5 is a synthetic zeolite which contains silica (Si) and alumina (Al) with the ratio of silica greater than the alumina. The catalyst is known as ZSM-5 because it has a pore diameter of 5 Å (angstroms) and it has more than five Si/Al ratios. The catalyst has a high production cost and a complex production process which is highly influenced by time and temperature. Based on that fact, the focus of this research is studying the production process of ZSM-5 and investigating the effect of time and temperature on the crystallinity and the morphology of ZSM-5. In this research, Latourette et al. method was used, followed by the calcination at different temperatures (500 °C, 600 °C, 700 °C, 800 °C) in 5 and 7 hours. Subsequently, ZSM-5 was characterized using XRD (X-ray Diffraction) and SEM (Scanning Electron Microscope). The XRD analysis shows that the peak of standard ZSM-5 synthesis is at 2 theta degree 23. Prior to the calcination, ZSM-5 has an average crystallinity of 37.7337%. However, after the calcination, the crystallinity of the catalyst increased as the temperature rises. At 500 °C, 600 °C, 700 °C, and 800 °C the crystallinity increases to 39.1959%, 44.0927%, 42.9425%, and 44.8806%, respectively. Meanwhile, calcination time affects the XRD peak intensities by increasing the ZSM-5 crystal cores. The longer the calcination time, the higher the peak intensity is.