Abstract
Experimental work in heterogeneous catalysis routinely requires the use of several diverse laboratory techniques. Frequently, the catalytic materials are hygroscopic, easily oxidized or contaminated at ambient conditions. Therefore, it is desirable to isolate the samples from the environment as they are handled between tests. A multifunctional apparatus has been designed to permit in situ studies of catalyst samples under controlled atmospheres. Several useful catalyst characterization techniques are integrated into one apparatus, namely, gas pulse chemisorption and titration, temperature programmed desorption, temperature programmed reduction and a recirculation gradientless reactor for reaction kinetics evaluation. Using this configuration, studies such as sintering, characterization and pulse or continuous reaction determinations can be performed. The apparatus described here was constructed and tested successfully for each of the techniques mentioned.
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