Thermal decomposition of magnesium and calcium sulfates

Technical Report · Thu Apr 01 00:00:00 EST 1982

DOI:https://doi.org/10.2172/5229109· OSTI ID:5229109

Roche, S L

The effect of catalyst on the thermal decomposition of MgSO/sub 4/ and CaSO/sub 4/ in vacuum was studied as a function of time in Knudsen cells and for MgSO/sub 4/, in open crucibles in vacuum in a Thermal Gravimetric Apparatus. Platinum and Fe/sub 2/O/sub 3/ were used as catalysts. The CaSO/sub 4/ decomposition rate was approximately doubled when Fe/sub 2/O/sub 3/ was present in a Knudsen cell. Platinum did not catalyze the CaSO/sub 4/ decomposition reaction. The initial decomposition rate for MgSO/sub 4/ was approximately 5 times greater than when additives were present in Knudsen cells but only about 1.5 times greater when decomposition was done in an open crucible.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5229109
• Report Number(s): LBL-14303; ON: DE82015000
• Resource Relation: Other Information: Thesis
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCIUM SULFATES
PYROLYSIS
MAGNESIUM SULFATES
CATALYTIC EFFECTS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CHEMICAL REACTIONS
DECOMPOSITION
MAGNESIUM COMPOUNDS
OXYGEN COMPOUNDS
SULFATES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
360101* - Metals & Alloys- Preparation & Fabrication