Scholarlink

In this study, a highly efficient bifunctional nanocatalyst was developed for n-hexane isomerisation: a system containing platinum-tungstophosphoric acid on titania (Pt/TPA/TiO2). X-ray powder diffraction, field emission scanning electron microscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, thermogravimetric analysis, and nitrogen adsorption-desorption techniques were used to characterise the catalyst. Isomerisation optimisation was conducted by Response Surface Methodology. Typical responses of the reactions were obtained under different liquid hourly space velocities (LHSV = 1–3 h−1), temperatures (120–200 °C), and H2:C6H12 ratios (0.5, 1, and 1.5); moreover, a second-order polynomial model was obtained using statistical analysis. However, under optimal conditions, an LHSV of 2 h−1, a hydrogen-to-hexane ratio of 1, and a temperature of 160 °C, a 40.2% isomerisation yield was achieved. This was attributed to adequate platinum dispersion and the acidity of TiO2-supported TPA, which preserved stable Brønsted/Lewis acid sites.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Experimental Investigation and Optimisation of N-Hexane Catalytic Isomerisation Over a Constructed Bifunctional Pt/TPA/TiO2 Nanocatalyst

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Alaa J. Awadh,
  • Saad H. Ammar

摘要

In this study, a highly efficient bifunctional nanocatalyst was developed for n-hexane isomerisation: a system containing platinum-tungstophosphoric acid on titania (Pt/TPA/TiO2). X-ray powder diffraction, field emission scanning electron microscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, thermogravimetric analysis, and nitrogen adsorption-desorption techniques were used to characterise the catalyst. Isomerisation optimisation was conducted by Response Surface Methodology. Typical responses of the reactions were obtained under different liquid hourly space velocities (LHSV = 1–3 h−1), temperatures (120–200 °C), and H2:C6H12 ratios (0.5, 1, and 1.5); moreover, a second-order polynomial model was obtained using statistical analysis. However, under optimal conditions, an LHSV of 2 h−1, a hydrogen-to-hexane ratio of 1, and a temperature of 160 °C, a 40.2% isomerisation yield was achieved. This was attributed to adequate platinum dispersion and the acidity of TiO2-supported TPA, which preserved stable Brønsted/Lewis acid sites.