Pulse-microcatalytic reactor

Oxygen chemisorption was performed in a pulse microcatalytic reactor... 

Benzene hydrogenation activity evaluation of the catalysts was carried out by a pulse and continuous testing method and the results are indicated in Table-2 and Figure 1. Activity is represented as percentage of benzene converted to cyclohexane. Activity results as per evaluation in pulsed microcatalytic reactor indicated a similar trend as obtained from continuous testing of samples. 

Kalthod, D.G., "A Method of Obtaining Langmuir-Hinshelwood Parameters From Pulsed Microcatalytic Reactors", Chem. Eng. Comm., 39, 323 (1985). 

The composition and reactivity of the carbon laid down during the initial stages of the propane dehydrogenation reaction was examined by transient isotope labelling experiments using [2-]3C]-C3HgandC3JHs as tracers in a series of reactions in a pulsed flow microcatalytic reactor. In these experiments alternate series of labelled and unlabelled propane pulses were passed over the catalyst sample and the products analysed by glc and mass spectrometry. 

Catalyst activity was measured in a microcatalytic reactor connected to GC with FID detector. The reactor was loaded with 3 cc catalyst and reduced at 250 C in a stream of H2(30 ml/min) for 1 hour. The temperature was reduced to 200 °C in the same hydrogen flow. Pulses(0.2pl) of benzene were injected and the unreacted benzene and the product cyclohexane were analysed using GC. 

The catalytic activity was examined in the reaction of CO oxidation. Reaction was performed by a pulsed microcatalytic technique. Impulses of (2% CO + 1%C>2) in He were passed through the catalysts. Products were analysed at the output of reactor on 1 m packed column (Porapak Q) coupled with thermal conductivity detector. Impulses time interval was 5 min, because of reaction mixture analysis. 

At the Mellon Institute he applied l4C tracers to examine the behavior of intermediates in Fischer-Tropsch synthesis over iron catalysts. By adding small amounts of radioactively labeled compounds to the CO/H2 synthesis gas mixtures, he was able to prove that some of these compounds (e.g., small alcohols) are involved in the initiation step of the chain growth process that leads to larger hydrocarbon products. It was during this era that his associates first placed a catalytic reactor into the carrier gas stream of a gas chromatograph and developed the microcatalytic pulse reactor, which is now a standard piece of equipment for mechanistic studies with labeled molecules. While at Mellon Institute Emmett began editing his comprehensive set of seven volumes called Catalysis, which he continued at Hopkins. 

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