Design and operating characteristics of a transient kinetic analysis catalysis reactor system employing in situ transmission Fourier transform infrared
Design and operating characteristics of a transient kinetic analysis catalysis reactor system employing in situ transmission Fourier transform infrared
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原位透射傅里叶变换红外瞬态动力学分析催化反应器系统的设计与运行特性
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发表时间：
2006
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通讯作者：
J. G. Goodwin
中科院分区：
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作者：
Yong Yang;R. Disselkamp;J. Szanyi;C. Peden;C. Campbell;J. G. Goodwin
介绍了一种新型的气相多相催化动力学装置。该装置能够进行快速同位素瞬态动力学分析（ITKA），其中用快速扫描透射傅里叶变换红外（FTIR）同时监测催化反应器内的气态和吸附物质，并且其气态流出物可以在试剂气流的快速切换期间通过质谱法监测。这使得一个更强大的版本的众所周知的稳态同位素瞬态动力学分析（SSITKA）技术，其中的气相和吸附物种的振动光谱也探测：FTIR-SSITKA。独特的反应器特性包括钨结构，液氮冷却或加热（200- 770 K），1.0-2.5atm的压力，快速反应器的拆卸和重新组装，以及催化剂装载在一个共同的体积。该装置的FTIR数据采集速率（3 Hz）比以前报道的仪器快10倍。95%的信号衰减时间
A novel apparatus for gas phase heterogeneous catalysis kinetics is described. The apparatus enables fast isotopic transient kinetic analysis (ITKA) to be performed in which both the gaseous and adsorbed species inside the catalytic reactor are monitored simultaneously with rapid-scan transmission Fourier transform infrared (FTIR), and its gaseous effluent can be monitored by mass spectroscopy during rapid switching of reagent gas streams. This enables a more powerful version of the well-known steady-state isotopic transient kinetic analysis (SSITKA) technique in which the vibrational spectra of the gas phase and adsorbed species are also probed: FTIR-SSITKA. Unique reactor characteristics include tungsten construction, liquid nitrogen cooling or heating (∼200–770K), pressures of 1.0–2.5atm, fast reactor disassembly and reassembly, and catalyst loading in a common volume. The FTIR data acquisition rate of this apparatus (3Hz) is tenfold faster than previously reported instruments. A 95% signal decay time ...