Application of Microwave Irradiation for Preparation of a KOH/Calcium Aluminate Nanocatalyst and Biodiesel. Issue 10 (6th September 2017)

• Record Type: Journal Article
• Authors: Nayebzadeh, Hamed; Saghatoleslami, Naser; Tabasizadeh, Mohammad
• Is Part Of: Chemical engineering & technology. Volume 40:Issue 10(2017)
• Page Start: 1826
• Page End: 1834
• Publication Date: 2017-09-06
• Subjects: Biodiesel -- Calcination temperature -- Calcium aluminate -- Microwave irradiation -- Solid‐base nanocatalyst; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201600466
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: Microwave combustion was applied for the fabrication of KOH/calcium aluminate for microwave‐enhanced biodiesel production. The effect of calcium nitrate and potassium hydroxide dosages on the properties and activities of samples was assessed. When the Ca/Al ratio was increased, the activity was enhanced probably due to the transformation of the sample to an active mayenite structure. The activity of the sample was reduced by a higher KOH loading as a result of covering the surface and porosity of the support by potassium components. The optimum sample was utilized in the transesterification reaction by two heating systems where the microwave irradiation reduced the reaction time drastically as compared to the conventional heating system. The sample converted canola oil to methyl ester nearly completely and showed high stability via calcination after each usage. Abstract : Microwave chemistry is increasingly applied, e.g., in heterogeneous catalyst preparation. KOH/calcium aluminate as a strong solid‐base catalyst for microwave‐enhanced biodiesel production was synthesized by microwave combustion. The effects of CaO and KOH dosages and calcination temperature on the structure and performance of the nanocatalysts was evaluated.