文献类型：期刊文献

英文题名：Sulfated Zirconia Synthesized in a One Step Solvent-Free Method for Removal of Olefins from Aromatics

作者：Liu, Jianfei[1];Liu, Naiwang[1];Ren, Kaiqing[1];Shi, Li[1];Meng, Xuan[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：56

期号：27

起止页码：7693

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20173003970748);WOS:【SCI-EXPANDED(收录号:WOS:000405643200010)】；

语种：英文

外文关键词：Inductively coupled plasma - Olefins - X ray diffraction - Nitrogen compounds - Solvents - Zirconia

摘要：Sulfated zirconia was synthesized by a one step solvent-free method; directly mixing Zr(OH)(4) and (NH4)(2)SO4. The entire synthesis process produces no wastewater, which is environmentally friendly. The synthesis factor (mole ratio of (NH4)(2)SO4:Zr(OH)(4)) is the main point to test catalytic activity. Structural properties are characterized by X-ray diffraction (XRD), N-2 adsorption-desorption isotherms, and inductively coupled plasma (ICP). The acid property is characterized by pyridine-FTIR The S coverage (X10(-6) mol S.m(-2))-Lewis acidic sites density (mmol.m(2)) relationship in sulfated zirconia reveals, that the generation order of Lewis acidic sites is from weak ones to strong ones. Calculation of acid property reveals the positive structural functional relationship (W-L/S-L catalytic activity). Weak Lewis acidic sites (W-L) promote the activity toward removal olefins, while strong Lewis acidic sites (S-L) speed up the deactivation of catalysts. The superior catalytic performance as well as environmentally friendly synthesis method dernonstrates that solvent-free sulfated zirconia has bright application prospects in industry.