ISOTOPIC STEADY-STATE AND STEP-RESPONSE STUDY ON CARBON GASIFICATION CATALYZED BY CALCIUM

被引：11

作者：

CAZORLAAMOROS, D

LINARESSOLANO, A

DEKKER, FHM

KAPTEIJN, F

机构：

[1] UNIV AMSTERDAM,DEPT CHEM ENGN,1018 WV AMSTERDAM,NETHERLANDS

[2] DELFT UNIV TECHNOL,DEPT CHEM ENGN,DELFT,NETHERLANDS

来源：

CARBON | 1995年 / 33卷 / 08期

关键词：

CA-CATALYZED CARBON GASIFICATION; TRANSIENT ISOTOPIC EXPERIMENTS; CARBON GASIFICATION MECHANISM; CATALYST WORKING ACTIVE SITES;

D O I：

10.1016/0008-6223(95)00068-O

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Isotopic steady-state and step-response (SR) experiments have been performed with calcium containing carbon samples with different metal content and sintering degree. The SR results: (i) rule out the CaO2/CaO mechanism; (ii) support the mechanism for the CO2-carbon gasification catalyzed by calcium previously proposed, confirming that CaCO3 is the active species; (iii) provide a measurement of the rate constants of the steps involved; and (iv) include additional steps in the reaction mechanism. SR can be used to determine the catalyst working active sites under experimental conditions where catalyst carbonation does not occur. However, they can provide erroneous results if the reaction conditions favour the catalyst carbonation.

引用

页码：1147 / 1154

页数：8

共 20 条

[1] CHARACTERIZATION OF COAL CHAR GASIFICATION RATE [J].