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8篇 您的检索式：作者名="Modiba"

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		题名	作者	年代	出处	被引量
	1	采用浸渍硅藻土作为多相催化剂从废植物油中生产生物柴油(英文)显示文摘In this study, biodiesel was produced from waste vegetable oil using a heterogeneous base catalyst synthesized by impregnating potassium hydroxide(KOH) onto diatomite. Response surface methodology based on a central composite design was used to optimize four transesterification variables: temperature(30–120 °C), reaction time(2–6 h), methanol to oil mass ratio(10%–50%) and catalyst to oil mass ratio(2.1%–7.9%). A quadratic polynomial equation was obtained to correlate biodiesel yield to the transesterification variables. The diatomite–KOH catalyst was characterized using X-ray diffraction(XRD), Fourier transform infra-red spectroscopy(FTIR) and a scanning electron microscope(SEM) equipped with an energy dispersive X-ray detector(EDS). A maximum biodiesel yield of 90%(by mass) was obtained. The reaction conditions were as follows: methanol to oil mass ratio 30%, catalyst to oil mass ratio 5%, reaction time 4 h, and reaction temperature 75 °C. The XRD, FTIR and SEM(EDS) results confirm that the addition of KOH modifies the structure of diatomite. During impregnation and calcination of the diatomite catalyst the K2 O phase forms in the diatomite structural matrix and the active basicity of this compound facilitates the transesterification process. It is possible to recycle the diatomite–KOH catalyst up to three times. The crucial biodiesel properties from waste vegetable oil are within the American Standard Test Method specifications.	Edward Modiba Christopher Enweremadu Hilary Rutto	2015	Chinese Journal of Chemical Engineering2015，23，1：	2
	2	Biodiesel production from baobab ( Adansonia digitata L.) seed kernel oil and its fuel properties显示文摘	Edward Modiba Peter Osifo Hilary Rutto	2014	Industrial Crops & Products2014，，：	1
	3	Trial of self-expandable metallic stents in the palliation of tracheo-oesophageal fistula in carcinoma of the oesophagus 显示文摘	Motilall SR Modiba MC Tsatsi LD	2007	S Afr J Surg2007，45，1：	1
	4	Trial of selfexpandable metallic stents in the palliation of tracheo- oesophageal fistula in carcinoma of the oesophagus 显示文摘	Motilall SR Modiba MC Tsatsi LD	2007	S Mr J Surg2007，45，1：	1
	5	Electrochemical study of cerium(IV) in the presence of ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentaacetate (DTPA) ligands显示文摘	P. Modiba A. M. Crouch	2008	Journal of Applied Electrochemistry2008，，9：	1
	6	Production of biodiesel from waste vegetable oil using impregnated diatomite as heterogeneous catalyst显示文摘	Modiba E Enweremadu C Rutto H	2015	ss Chinese Journal of Chemical Engineering2015，1，：	1
	7	Electrochemical Study of Cerium( Ⅳ ) in the Presence of Ethylenediaminetetraacetic Acid(EDTA) and Diethylenetriaminepentaacetate(DTPA) Ligands 显示文摘	Modiba P Crouch A M	2008	J Appl Electrochem2008，38，：	1
	8	Electrochemical Impedance Spectroscopy Study of Ce( Ⅳ ) with Aminopolycarboxylate Ligands for Redox Flow Batteries Applications显示文摘	Modiba P Matoetoe M Crouch A M	2012	J Power Sources2012，205，：	1

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