nanosilica extracted from rice husk in Polyhydroqinilion Synthesis
نویسندگان
چکیده مقاله:
Phosphosulfonic acid as a multi solid site was easilyprepared from the reaction of ammonium dihydrogen phosphatewith chlorosulfonic acid in CCl4and for improved its catalyticactivity was supported nano Silica was extracted from husk ricecontains about 95% of Silica the size of extracted nano silica wasdetermined by SEM efficiency of this solid acid in four componentcondensation reaction of aromatic aldehydes, dimidone, diketon, anammonium acetate was investigated the results were clearlyshown that aldehydes having electron withdrawing and electrondonating groups were efficiently converted to the correspondingPolyhydroqinilion the high yields and short time products wereproduced at 110 0C under solvent free conditions
منابع مشابه
Phosphosulfonic acid as an soild acid supported on nanosilica extracted from rice husk in Polyhydroqinilion Synthesis
Phosphosulfonic acid as a multi solid site was easily prepared from the reaction of ammonium dihydrogen phosphate with chlorosulfonic acid in CCl4and for improved its catalytic activity was supported nano Silica was extracted from husk rice contains about 95% of Silica the size of extracted nano silica was determined by SEM efficiency of this solid acid in four comp...
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عنوان ژورنال
دوره 5 شماره 1
صفحات 40- 46
تاریخ انتشار 2015-04-01
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