Hydrothermal synthesis of kaolin-based ZSM-5 zeolite: Effect of synthesis parameters and its application for bioethanol conversion

被引：6

作者：

Aliyu, Usman Mohammed ^{[1
]}

Rathilal, Sudesh ^{[2
]}

Mustapha, Sherif Ishola ^{[1
]}

Musamali, Ronald ^{[1
]}

Tetteh, Emmanuel Kweinor ^{[2
]}

机构：

[1] Durban Univ Technol, Fuels & Petrochem Res Grp, Chem Engn, POB 1334, ZA-4000 Durban, South Africa

[2] Durban Univ Technol, Fac Engn & Built Environm, Dept Chem Engn, Green Engn Res Grp, ZA-4001 Durban, South Africa

来源：

CATALYSIS COMMUNICATIONS | 2023年 / 182卷

关键词：

Catalysis; Hydrothermal; Alumina; Silica; ZSM-5; Nanoparticles; RATIO;

D O I：

10.1016/j.catcom.2023.106750

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In petrochemical applications, improving the catalytic activity and stability of Zeolite as a cutting-edge material has gained research interest. Herein, a local South African clay as a source of high silica and alumina with an organic template of tetrapropylammonium bromide (TPABr) was synthesized hydrothermally. The study then examined the effect of crystallization temperature (120-180 & DEG;C), crystallization time (24-96 h) and ageing time (0-48 h) on the crystallinity, surface morphology and functional group of the Kaolin-based ZSM-5 Zeolite formed. Characterization results by X-ray diffraction, scanning electron microscopy (SEM), Brunauer-EmmettTeller (BET) and Fourier Transform Infrared Spectroscopy (FTIR) analysis revealed the hydrothermal synthesis of the crystalline powder was successful. The XRD revealed the highest intensity at n-ary sumation 5 with the most intense peaks at 2 Ѳ& DEG; and a relative crystallinity from 74.6% to 76.66% at the temperature of 180 & DEG;C and 48 h of ageing and crystallization time of sampled powder. The crystals' growth and pore structure (openings of 5-5.5 & ANGS;) was affirmed by the SEM results. Likewise, the BET revealed the surface area (146.15 m2/g), pore volume (0.056 cm3/g) and pore size (59.12 & ANGS;). The FTIR spectra vibration within the wavenumber from 545 to 1224 cm-1 also confirmed the sharpness of the beta and pentasil index peaks. Moreso, the bioethanol conversion at the temperature of 180 & DEG;C over the synthesized ZSM-5 catalyst yielded 2.03% H2, 1.03% CH4, 37.07% C2H4, and 62.4% liquids. This study has demonstrated the synthesized Kaolin-based ZSM-5 Zeolite has the potential for industrial decomposition of ethanol with good catalyst stability.

引用

页数：9

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