4458

237 دكتري

دكتري

شيمي آلي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي

1387

دوازده، [159]، [7]، [II]ص: مصور، جدول، نمودار

ص.ع به: فارسي و انگليسي

مهران غياثي، صبيحه سليمانيان زاد

شادپور ملك پور

88/2/21

مجيد ميرمحمدصادقي، محمد قريشي، امير عبدالملكي

شيمي

ID237 دكتري

به فارسي و انگليسي: قابل رويت در نسخه ديجيتال

Abstract Immobilization of Candida rugosa lipase onto modified and unmodified bentonites is described Theeffect of hydrophilic or hydrophobic nature of the support the reuse efficiency and kinetic behavior ofimmobilized lipase were studied The immobilized enzyme exhibited an activity comparable to the free enzymeafter storage at 30 C Alkaline phosphatase from calf intestinal mucous membrane was immobilized on unmodified andmodified bentonites The immobilized enzyme exhibited activity comparable to the soluble enzyme after storageat 30 C ZrO2 TiO2 mixed oxides with a Zr and Ti molar ratio of 1 1 were prepared with and without surfactant Catalysts containing 0 35 H3PO4 were prepared using these mixed oxides and the catalytic performance ofeach material for vapor phase dehydration of 1 octanol was determined At optimized conditions the maximumconversion of 1 octanol and maximum selectivity to 1 octene was achieved over 15 wt H3PO4 ZrO2 TiO2 surfat 350 C The effect of time on stream was studied over 15 wt H3PO4 ZrO2 TiO2 surf at 350 C Paracetamol was synthesized via the environmentally benign liquid phase Beckmann rearrangement of 4 hydroxyacetophenone oxime over Al MCM 41 modified with H3PO4 Aprotic solvents with high dielectricconstant or high polar nature are preferred for this transformation acetone being the optimal solvent Theconversion of 4 hydroxyacetophenone oxime to paracetamol increased with the H3PO4 content in the catalystsup to a maximum value for a H3PO4 loading of 30

مهران غياثي، صبيحه سليمانيان زاد

شادپور ملك پور

مجيد ميرمحمدصادقي، محمد قريشي، امير عبدالملكي