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Usage of Combinatorial Chemistry in Propane Selective Oxidation to Acrylic Acid

Author: FanZhiGui
Tutor: ZhouXiaoPing
School: Hunan University
Course: Chemical processes
Keywords: Combination of catalytic The diffuse reflection of the high-throughput colorimetric detection system Selective Oxidation of Propane Acrylic acid Composite metal oxide catalyst
CLC: TQ225.131
Type: Master's thesis
Year: 2009
Downloads: 19
Quote: 0
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Abstract


Combinatorial chemistry is a new method for the past 20 years developed a rapid synthesis and screening of a large number of compounds, the method is known as one of the recent years, important scientific advances. Introducing the concept of combinatorial chemistry the catalysis research areas to form an emerging technology - catalytic combinatorial chemistry, With a deep understanding of the catalytic reaction mechanism and catalyst design based on the technology, the use of combinatorial chemistry and rapid screening technique to determine the specific catalytic reaction BEST catalysts. The papers involved in the design and construction of the new the catalytic combination reaction system and the diffuse reflection of the high-throughput colorimetric detection system. Catalytic combination of multi-phase reaction system including the parallel shunt and multi-channel parallel reaction device. Gas through parallel shunt 64 passage, corresponding to the separated fluid with other parallel shunt mixed into multi-channel parallel reaction apparatus catalytic reaction. The diffuse reflection of the high-throughput colorimetric detection system mainly through the use of material in the ultraviolet-visible region having a specific absorption frequency characteristics, the simultaneous analysis of multiple samples of the spectral detection system. Papers use a combination of catalytic reaction system and the diffuse reflection of the high-throughput colorimetric detection system, the the propane catalytic oxidation to acrylic acid catalyst to explore. Evaluation of a series of different metal-doped Mo-V-Te-Nb-Oy catalyst, different preparation methods and elemental composition of the reaction. The experiments showed that the catalyst solution was prepared having a higher activity, copper Adulteration can significantly improve the activity of the catalyst. This thesis is to filter out the optimal catalyst Cu 0.1 MoV 0.25 Te 0.11 Nb 0.12 O y process conditions were studied, and the reaction temperature, airspeed, the feed gas C 3 / air ratio of the water vapor content of the catalyst performance. Experimental results show that: the reaction temperature is 400 ° C, the propane flow 4.15ml/min, air flow 41.5ml/min 41.5ml/min when the catalyst performance of the steam flow preferably this case, 49.05% of the rate of propane conversion, acrylic acid selectivity was 39.37%. The paper also examined tellurium component in the preparation process of catalyst loss phenomena as well as the impact on the catalytic performance, tellurium component in the catalyst preparation procedure results show that the loss of about 50%. Loss of tellurium component has little effect, but be the catalyst crystal shape formation. Under optimum preparation conditions, the increase of the original tellurium content in the raw material can to some extent compensate for the impact of tellurium wastage.

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CLC: > Industrial Technology > Chemical Industry > Basic Organic Chemistry Industry > The production of aliphatic compounds ( acyclic compounds) > Aliphatic carboxylic acid and its derivatives > Fatty acids and their derivatives > Unsaturated monobasic acid > Acrylic acid
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