کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
796140 902792 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and characterization of tungstophosphoric acid intercalated Ni/Al HTlc with magnetite
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Synthesis and characterization of tungstophosphoric acid intercalated Ni/Al HTlc with magnetite
چکیده انگلیسی

Tungstophosphoric acid (TPA) was intercalated in magnetic nickel aluminium hydrotalcite-like compounds (NAH) by direct intercalation via ion exchange method and the materials were characterized by TG–DSC, XRD, FT-IR, TEM, SEM, Raman and VSM techniques. XRD results revealed intercalation of TPA species, which is further corroborated by the presence of these Keggin ions by FT-IR and Raman. TG–DSC results indicated that higher thermal stability of the obtained materials was related to the presence of Keggin ions in the NAH. The catalytic activity of the prepared catalysts was tested for the isopropanol reaction. The effect of reaction temperature on the conversion and selectivity of TPA-NAH was studied and the findings are discussed. The samples synthesized at 180 °C showed highest catalytic activity in isopropanol reaction.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 209, Issue 5, 1 March 2009, Pages 2613–2619
نویسندگان
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