Academic Journals Database
Disseminating quality controlled scientific knowledge

PERFORMANCE EVALUATION OF SEVERAL SOLID HETEROPOLY COMPOUNDS AS FUNCTIONAL TRAPS FOR NOX REMOVAL

ADD TO MY LIST
 
Author(s): Rui Wang | Tao Ma | Dan Wu | Korchak Vladimir

Journal: Petroleum and Coal
ISSN 1337-7027

Volume: 53;
Issue: 3;
Start page: 229;
Date: 2011;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: nitric oxides | heteropoly compound | catalyst | adsorption | decomposition.

ABSTRACT
Several Keggin heteropoly acids/salts were evaluated concerning their activities in adsorbing NOx fromgas stream. All experiments were conducted in a fixed-bed reactor. The candidate heteropolyacids/salts examined comprise H4PVMo11O40, H5PV2Mo10O40, H6PV3Mo9O40, (NH4)3PW12O40,(NH4)3PMo12O40, K3PW12O40, K2HPW12O40, KH2PW12O40. Results showed that substitution ofcoordination atom Mo in the [PMo12O40]3- anion by one or more V atoms leads to only slight change inNOx adsorption activity; however, it is for the first time that nano (NH4)3PW12O40 was found to have anup to 10.6% enhancement in NOx adsorption efficiency in comparison with the same catalyst ofnormal particle size; substitution of H+ in H3PW12O40 by metal cation tends to lower the adsorption activity,regardless of the metal cations introduced. By IR analysis, NO was found to be adsorbed via interactionwith the proton of HPW structure.
Why do you need a reservation system?      Save time & money - Smart Internet Solutions