کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
611903 880688 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surface characterization of adsorbents in ultrasound-assisted oxidative desulfurization process of fossil fuels
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Surface characterization of adsorbents in ultrasound-assisted oxidative desulfurization process of fossil fuels
چکیده انگلیسی

Surface properties of two different phases of alumina were studied through SEM images. Characterization of amorphous acidic alumina and crystalline boehmite by XRD explains the differences in adsorption capacities of each sample. Data from small angle neutron scattering (SANS) provide further results regarding the ordering in amorphous and crystalline samples of alumina. Quantitative measurements from SANS are used for pore size calculations. Higher disorder provides more topological traps, irregularities, and hidden grooves for higher adsorption capacity. An isotherm model was derived for adsorption of dibenzothiophene sulfone (DBTO) by amorphous acidic alumina to predict and calculate the adsorption of sulfur compounds. The Langmuir–Freundlich model covers a wide range of sulfur concentrations. Experiments prove that amorphous acidic alumina is the adsorbent of choice for selective adsorption in the ultrasound-assisted oxidative desulfurization (UAOD) process to produce ultra-low-sulfur fuel (ULSF).

A hybrid Langmuir–Freundlich isotherm model for DBTO adsorption on amorphous acidic alumina.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 313, Issue 1, 1 September 2007, Pages 18–25
نویسندگان
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