کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
57766 47129 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetics and adsorption comparative study on the photocatalytic degradation of o-, m- and p-cresol
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Kinetics and adsorption comparative study on the photocatalytic degradation of o-, m- and p-cresol
چکیده انگلیسی

The kinetics and adsorption aspects of the photocatalytic degradation of three cresolic isomers were studied in aqueous suspension containing TiO2 (Degussa P-25). The Langmuir–Hinshelwood model (L–H) was applied to the kinetic results. Degradation kinetic constants were similar for the three compounds (o-cresol, 0.0188 ppm/s; m-cresol, 0.0166 ppm/s; p-cresol, 0.0182 ppm/s). However, the adsorption pattern of p-cresol is different from those of the other organics. Results from adsorption experiments carried out in darkness were modelized by using Langmuir and Freundlich isotherms. In general, the studied cresols showed little adsorption on TiO2 surface. The adsorbed species on the catalyst surface were identified by FITR spectroscopy. According to these results, only p-cresol forms cresolates. An important correlation between Langmuir constants and FTIR results was observed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 129, Issues 1–2, 15 November 2007, Pages 256–262
نویسندگان
, , , , , ,