Catalytic reduction of calcium sulfate to calcium = sulfide by carbon monoxide

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Titre du document / Document title

Catalytic reduction of = calcium=20 sulfate to calcium sulfide by carbon monoxide

Auteur(s) / Author(s)

HONGJIAN LI⁽¹⁾ ; YAHUI=20 ZHUANG⁽¹⁾ ;=20

Affiliation(s) du ou des auteurs / Author(s)=20 Affiliation(s)

⁽¹⁾Research Center for = Eco-Environmental=20 Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing = 100085,=20 CHINE

R=C3=A9sum=C3=A9 / Abstract

The catalytic reduction of = calcium sulfate to=20 calcium sulfide by carbon monoxide over various catalysts was=20 investigated. An optimum conversion rate of more than 95% was = obtained at=20 660=C2=B0C over a Ni-Fe mixed catalyst. Parametric studies on the = performance=20 of the catalyst have been conducted. The parameters studied = include=20 temperature, composition of catalysts, concentration of catalysts, = reaction time, and CO concentration. Some physicochemical = characteristics=20 of samples were studied by using X-ray diffraction (XRD), scanning = electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) = measurements,=20 and a possible mechanism is proposed.

Revue / Journal Title

Industrial & engineering = chemistry=20 research ISSN 0888-5885 =20 CODEN IECRED =20

Source /=20 = Source

1999, vol. 38, n^o9, pp. 33= 33-3337 (15=20 ref.)

Langue / Language

Anglais

Editeur / Publisher

American Chemical Society, Washington, = DC,=20 ETATS-UNIS (1987) (Revue)

Mots-cl=C3=A9s anglais / English Keywords

Chemical = reduction ; Calcium=20 Sulfates ; Carbon monoxide ; Calcium Sulfides ; Catalytic reaction = ;=20 Heterogeneous catalysis ; Mixed catalyst ; Kinetics ; Conversion = rate ;=20 Catalyst activity ; Reaction mechanism ; Medium effect ; = Experimental=20 study ; Alkaline earth metal Compounds ; Transition metal ;=20

Mots-cl=C3=A9s fran=C3=A7ais / French = Keywords

R=C3=A9duction chimique ; Calcium=20 Sulfate ; Carbone monoxyde ; Calcium Sulfure ; R=C3=A9action = catalytique ;=20 Catalyse h=C3=A9t=C3=A9rog=C3=A8ne ; Catalyseur mixte ; = Cin=C3=A9tique ; Taux conversion ;=20 Activit=C3=A9 catalytique ; M=C3=A9canisme r=C3=A9action ; Effet = milieu ; Etude=20 exp=C3=A9rimentale ; CaSO4 ; CO ; CaS ; M=C3=A9tal alcalinoterreux = Compos=C3=A9 ; M=C3=A9tal=20 transition ;=20

Mots-cl=C3=A9s espagnols / Spanish Keywords

Reducci=C3=B3n = qu=C3=ADmica ; Calcio=20 Sulfato ; Carbono mon=C3=B3xido ; Calcio Sulfuro ; Reacci=C3=B3n = catal=C3=ADtica ;=20 Cat=C3=A1lisis heterog=C3=A9nea ; Catalizador mixto ; = Cin=C3=A9tica ; Factor conversi=C3=B3n ;=20 Actividad catal=C3=ADtica ; Mecanismo reacci=C3=B3n ; Efecto medio = ; Estudio=20 experimental ; Metal alcalino-t=C3=A9rreo Compuesto ; Metal = transici=C3=B3n ;=20

Localisation / Location

INIST-CNRS, Cote INIST : 120=20 F, 35400008966112.0200

Toute reproduction ou diffusion m=C3=AAme = partielle, par=20 quelque proc=C3=A9d=C3=A9 ou sur tout support que ce soit, ne = pourra =C3=AAtre faite sans=20 l'accord pr=C3=A9alable =C3=A9crit de l'INIST-CNRS.
No part of = these records may=20 be reproduced of distributed, in any form or by any means, without = the=20 prior written permission of INIST-CNRS.

N=C2=BA notice refdoc (ud4) : = 1935632

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