کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
145245 456336 2016 8 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and oxidative desulfurization of novel lactam-based Brønsted-Lewis acidic ionic liquids
ترجمه فارسی عنوان
سنتز و سولفوریزاسیون اکسیداتیو از مایعات یونی اسیدی Brønsted-Lewis بر اساس لاکتام جدید
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کلمات کلیدی
مایع یونی اسید Bronsted-Lewis؛ مایع یونی بر پایه لاکتام؛ مایع یونی بر پایه ZnCl2؛ سولفوریزاسيون اکسيداتيو؛ سوخت دیزلی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• A novel kind of Brønsted-Lewis acidic ILs was developed.
• The ILs were investigated in ODS process and exhibited highly efficient catalytic performance.
• S-content in diesel was reduced to less than 10 ppm through a one-step ODS.
• Multi-phase systems consisted of water, oil and ILs were investigated.

Novel Brønsted-Lewis acidic ionic liquids having a protonated N-octylcaprolactam-based cation and Cl/nZnCl2 anion (n = 1, 2 and 3) were synthesized and investigated as catalysts in the oxidative desulfurization (ODS) of both model oil and real diesel fuel, with hydrogen peroxide (H2O2, 30 wt%) as oxidant. It is observed that the ODS performance increases significantly with the increase of ZnCl2 proportion. Then detailed experiments for the ODS of model oil were carried out with [Hnoc]Cl/3ZnCl2 to investigate the influence of some important factors, including reaction temperature, molar ratio of H2O2/S, ILs dosage, initial S-content and sulfide species. It is worth noting that, with the mass ratio of ILs/oil of only 1:20, satisfactory conversion rate can also be achieved for the removal of dibenzothiophene (DBT), and the ILs were used for six cycles without a noticeable decrease in activity. What is more important, the ILs can reduce the S-content of a real diesel from 559.7 ppm to 8.2 ppm with 98.5% sulfur removal rate and 96.3% diesel recovery through a one-step ODS process. Deduced from the GC-PFPD spectra, almost all the original S-compounds and their oxidized products were completely converted and extracted, respectively. The outstanding desulfurization efficiency can be attributed to the good phase transfer property of the ILs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 306, 15 December 2016, Pages 131–138
نویسندگان
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