NIOSHTIC-2 Publications Search

Carbochlorination of dispersed oxides in a molten salt reactor.

Authors
Dobbins-MS; Burnet-G
Source
AIChE J 1988 Jul; 34(7):1086-1093
NIOSHTIC No.
10007730
Abstract
Reaction mechanism and rates were determined from 803 to 1,073 K for the carbochlorination of Al2O3 and of Al, Si, and Fe-mixed oxides using Cl2 and C slurried in a stirred melt of NaCl--AlCl3. Alumina chlorination rates of 0.33-2.0 X 10-8 kmol/s were obtained using C:melt weight ratios between 1:21 and 1:42. The reaction rate was proportional to C loading at temperatures below 923 K, while gas-liquid mass transfer was rate controlling at higher temperatures. Carbochlorination of the combined oxides in coal fly ash at 923 K and oxide conversions less than about 50 pct was also gas-liquid mass-transfer-controlled. At higher conversions, dissolution became the rate-controlling factor. A 40 pct (molar) AlCl3 melt was more effective than a 48 pct AlCl3 melt for the selective chlorination of Al2O3 over SiO2. Research was done at Iowa State University under Grants G1144119 and G1154119.
Keywords
Oxides; Reaction rates; Aluminum; Silicon; Iron; Alumina; Coal; Fly ash; Chlorine; Carbon; Sodium; Sodium compounds; Aluminum compounds; Silicon compounds
CODEN
AICEAC
CAS No.
1344-28-1; 7429-90-5; 7439-89-6; 1345-25-1; 1309-37-1; 7440-21-3; 7440-23-5; 7647-14-5
Publication Date
19880701
Document Type
OP; Journal Article
Funding Type
Grant
Fiscal Year
1988
Identifying No.
MIR-9-90; Grant-G1144119; Grant-G1154119
Issue of Publication
7
ISSN
0001-1541
NIOSH Division
WO
Source Name
AIChE Journal
State
IA
Performing Organization
Iowa State University
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division