کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
55413 47052 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of vanadium phosphate catalyst precursors for the selective oxidation of butane using α,ω-alkanediols
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Preparation of vanadium phosphate catalyst precursors for the selective oxidation of butane using α,ω-alkanediols
چکیده انگلیسی

Vanadium phosphate catalyst precursors were prepared from V2O5 and H3PO4 or VOPO4·2H2O using α,ω-alkanediols (1,4-butanediol, 1,5-pentanediol and 1,6-hexanediol) as both the reducing agent and the solvent. A series of layered VOHPO4·HO(CH2)nOH (n = 4–6) materials intercalated with α,ω-alkanediols were obtained. The performance for butane oxidation of the final catalysts formed via the in situ transformation of the VOHPO4·HO(CH2)nOH precursors under reaction conditions is described. The final catalysts derived from the alkanediol intercalated materials were found to exhibit relatively low selectivities to maleic anhydride and comprised of VV (VOPO4) phases with an amorphous VIV phase. However, when a crystalline (VIVO)2P2O7 phase is present, with small amounts of VV phases, as with materials prepared with 1,4-butanediol, the specific and intrinsic catalytic activity are higher.

Figure optionsDownload high-quality image (204 K)Download as PowerPoint slideHighlights
► Vanadium phosphate catalyst precursors were prepared using α,ω-alkanediols.
► VOHPO4·HO(CH2)nOH (n = 4–6) materials intercalated with α,ω-alkanediols were obtained.
► Catalysts containing crystalline (VO)2P2O7 with small amounts of VV had high activity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 183, Issue 1, 20 March 2012, Pages 52–57
نویسندگان
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