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Electro-generation of Furfural Alcohol and Furoic Acid in Pairs by Ni-P-mCMC/mCS Bipolar Membrane
Author: GuoZhenZhen
Tutor: ChenZhen
School: Fujian Normal University
Course: Polymer Chemistry and Physics
Keywords: Bipolar membrane Electrochemical Synthesis Phosphorylation Mometasone Furfuryl alcohol
CLC: TQ251.11
Type: Master's thesis
Year: 2010
Downloads: 30
Quote: 0
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Abstract
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In order to reduce the impedance of the bipolar membrane , to improve the efficiency of hydrolysis from phosphorus pentoxide, triethyl phosphate and phosphoric acid as a reactant , the phosphorylation of carboxymethyl cellulose ( CMC ) was prepared , by Fe3 modified with as male film ; bipolar membrane to chitosan (CS) and blends of polyvinyl alcohol modified with glutaraldehyde is used as the female film sol Overcast film sol cast male film prepared P-mCMC/mCS . Determination of the CS , the charge density of the CMC colloidal phosphorylation positive degree of swelling of the membrane in the alkali solution and ion permeability , the bipolar membrane P-mCMC/mCS infrared spectra and the ion exchange capacity . IR and contact angle measurement results show that the CMC by the modified hydrophilic performance has been significantly improved . The membrane AC impedance measurement results of the IV curve that smaller resistance and working voltage of the bipolar membrane . Phosphorylation reagent modified carboxymethyl cellulose sodium and glutaraldehyde modified chitosan prepared Ni-P-mCMC/mCS bipolar membrane and used for the electrochemical reduction of the preparation of alcohol . Determination of the AC impedance of the ion exchange capacity and a film of the film . In the electroless plating method to metallic nickel is plated on the surface of the cation exchange film , in order to achieve the zero pole pitch electrolysis in the cathode chamber . Hydrolysis and H ions generated from the intermediate layer of the bipolar membrane migrate into the cathode chamber and the cathode chamber was made acidic , thereby ensuring the furfural restore the electricity generated Alcohol carried . Compared with the traditional liquid pressure or high-pressure hydrogenation method , to avoid the the chromium pollution generated by the Cu-Cr catalyst for green technology . Preparation of phosphorylation reagent - modified sodium carboxymethyl cellulose ( MCMC ) male film layer Overcast sol prepared with glutaraldehyde modified chitosan ( MCS ) , and the anion layer the sol cast in Yang film prepared P-mCMC/mCS bipolar membrane layer, and then electroless plating nickel plating on the surface of the male film has prepared Ni-P-mCMC/mCS bipolar membrane , and applied to pairs Electrochemical Synthesis of furfuryl alcohol (cathode room ) , mometasone ( anode chamber ) . Under the action of an electric field , the bipolar membrane hydropower generated from H into the cathode chamber cation through mCMC film , to promote the the furfural power reduction generated furfuryl process carried ; OH - through mCS anion membrane into the anode chamber , and furfural electrically oxide H generated in the process of generating mometasone binding to generate H20, in order to increase the speed of the forward reaction .
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CLC: > Industrial Technology > Chemical Industry > Basic Organic Chemistry Industry > The production of heterocyclic compounds > Five heterocycles containing a single different atoms > Oxa -mao ( furans) family > Oxa -mao and its homologues and derivatives
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