Process for testing catalysts using spectroscopy
First Claim
1. A method for evaluating a plurality of candidate catalysts, the method comprisingsimultaneously contacting a plurality of candidate catalysts having differing compositions with one or more reactants under reaction conditions to catalyze at least one reaction, the plurality of candidate catalysts being simultaneously contacted with the one or more reactants in a common reactor, and simultaneously detecting reaction products or unreacted reactants by spectroscopic methods to determine the relative efficacy of the plurality of candidate catalysts.
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Abstract
Methods for evaluating catalysts, in which a multicell holder, e.g., a honeycomb or plate, or a collection of individual support particles, is treated with solutions/suspensions of catalyst ingredients to produce cells, spots or pellets holding each of a variety of combinations of the ingredients, is dried, calcined or treated as necessary to stabilize the ingredients in the cells, spots or pellets, then is contacted with a potentially reactive feed stream or batch, e.g., biochemical, gas oil, hydrogen plus oxygen, propylene plus oxygen, CCl2F2 and hydrogen, etc. The reaction occurring in each cell can be measured, e.g., by infrared thermography, spectroscopic detection of products or residual reactants, or by sampling, e.g., multistreaming through low volume tubing, from the vicinity of each combination, followed by analysis, e.g., spectral analysis, chromatography, etc., or by observing temperature change in the vicinity of the catalyst, e.g., by thermographic techniques, to determine the relative efficacy of the catalysts in each combination. Robotic techniques can be employed in producing the cells, spots, pellets, etc.
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Citations
56 Claims
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1. A method for evaluating a plurality of candidate catalysts, the method comprising
simultaneously contacting a plurality of candidate catalysts having differing compositions with one or more reactants under reaction conditions to catalyze at least one reaction, the plurality of candidate catalysts being simultaneously contacted with the one or more reactants in a common reactor, and simultaneously detecting reaction products or unreacted reactants by spectroscopic methods to determine the relative efficacy of the plurality of candidate catalysts.
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3. A method for evaluating a plurality of candidate catalysts, the method comprising
flowing a reactant-containing stream through each of a plurality of reaction channels in a parallel flow reactor, each of the plurality of reaction channels comprising an inlet for receiving a reactant-containing stream, an outlet for discharging a product containing stream, and a plurality of catalyst-candidates having differing compositions, each of the plurality of catalyst candidates being in its own reaction channel, simultaneously contacting a plurality of candidate catalysts having differing compositions with one or more reactants under reaction conditions such that at least one reaction is catalyzed by each of the plurality of candidate catalysts, the reaction conditions including a temperature greater than 100° - C., and additionally, or alternatively, a pressure of greater than 1 bar, and
simultaneously detecting reaction products in the plurality of product-containing streams by spectroscopic methods to determine the relative efficacy of the plurality of candidate catalysts, wherein the parallel flow reactor further comprises a plurality of sampling tubes adapted to provide fluid communication between the plurality of reaction channels and a plurality of spectrometers for multistream detection of a reaction product or unreacted reactant in each of the plurality of discharged product-containing streams.
- C., and additionally, or alternatively, a pressure of greater than 1 bar, and
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5. A method for evaluating a plurality of candidate catalysts, the method comprising
simultaneously contacting a plurality of candidate catalysts having differing compositions with one or more reactants under reaction conditions to catalyze at least one reaction, irradiating the reaction products or unreacted reactants, determining radiation absorbed by reaction products or unreacted reactants during the course of the reaction to determine the relative efficacy of the plurality of candidate catalysts.
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11. A method for evaluating a plurality of candidate catalysts, the method comprising
simultaneously contacting a plurality of candidate catalysts having differing compositions with one or more reactants under reaction conditions to catalyze at least one reaction, and detecting reaction products or unreacted reactants using infrared spectroscopy to determine the relative efficacy of the plurality of candidate catalysts.
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23. A method for evaluating a plurality of candidate catalysts, the method comprising
simultaneously contacting a plurality of candidate catalysts having differing compositions with one or more reactants under reaction conditions to catalyze at least one reaction, and detecting reaction products or unreacted reactants using polarized light spectroscopy to determine the relative efficacy of the plurality of candidate catalysts.
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26. A method for evaluating a plurality of candidate catalysts, the method comprising
providing a parallel reactor comprising a plurality of candidate catalysts having differing compositions, a plurality of reaction channels, and one or more radiation-transparent windows, each of the plurality of candidate catalysts being in its own reaction channel, contacting the plurality of candidate catalysts with one or more reactants under reaction conditions to catalyze at least one reaction, irradiating the reaction products or unreacted reactants with radiation through a radiation-transparent window, and detecting reaction products or unreacted reactants by spectroscopic methods through a radiation-transparent window to determine the relative efficacy of the plurality of candidate catalysts.
Specification