Advanced Infrared Spectroscopy for Improved Characterizationof Chemical Systems

小企业创新研究（SBIR）第一阶段项目 在分析和表面化学的一般领域和在 过程分析仪器子领域。 这个目标 研究是为了证明一个坚固的，相对 廉价、灵敏和通用的检测器， 成分、浓度和温度的在线分析 工艺流中的气体和颗粒。 本仪器是 基于相敏傅里叶变换（PS-FT）光谱学， 它将被设计为（1）大大减少噪音， 测量湍流、不均匀或 含有颗粒，（2）增加检测限， 无噪声环境，以及（3）提供一种灵敏的方法， 进行空间分辨测量。 PS-FT将扩大 傅里叶变换红外（FT-IR）发射能力， 透射（E/T）光谱学是一种已被广泛应用的技术 由Advanced Fuel Research，Inc.开发并获得专利。 这个阶段 我的项目将展示PS-FTIR的能力。 的 技术将通过修改商业FT-IR和 将演示如何减少探测器的噪声， 从样品流中抑制噪声，以及应用 交叉光束技术，用于获得空间分辨数据。 现代化学分析工艺流程越来越需要 复杂的方法来理解复杂的化学过程。 通常，许多变量必须同时测量，现场， 和可探测性的下限。 虽然许多技术 作为现场诊断，通常它们只测量 一个属性，因此需要几个仪器来分析 溪 第一阶段研究将证明， 提高灵敏度和空间分辨率的可行性 FT-IR同时保留其宽光谱带宽。 的 如能按计划成功开发这一工具， 与以下组合相比， 诊断目前可用。

This Small Business Innovation Research (SBIR) Phase I project is in the general area of analytical and surface chemistry and in the subfield of process analytical instrumentation. The goal of this research is to demonstrate the feasibility of a rugged, relatively inexpensive, sensitive and versatile detector for the simultaneous on-line analysis of compositions, concentrations, and temperatures of gases and particles in process streams. This instrument is based on Phase Sensitive Fourier Transform (PS-FT) spectroscopy, and it will be designed to (1) substantially reduce the noise in measurements of hot streams that are turbulent, inhomogeneous, or contain particles, (2) increase the limits of detection in a noise-free environment, and (3) provide a sensitive method of performing spatially resolved measurements. PS-FT will expand the capabilities of Fourier Transform Infrared (FT-IR) Emission and Transmission (E/T) spectroscopy which is a technique that has been developed and patented by Advanced Fuel Research, Inc. This Phase I project will demonstrate the capabilities of PS-FTIR. The technique will be implemented by modifying a commercial FT-IR and will demonstrate the reduction of noise from detectors, the rejection of noise from sample streams, and the application of a crossed beam technique for obtaining spatially resolved data. Modern chemical analysis of process streams requires increasingly sophisticated methods to understand complex chemical processes. Often, many variables must be measured simultaneously, in-situ, and at the lower limits of detectability. While many techniques are available as in-situ diagnostics, in general they only measure one property, so that several instruments are required to analyze the stream. This Phase I research will demonstrate the feasibility of enhancing the sensitivity and spatial resolution of FT-IR while retaining its broad spectral bandwidth. The successful development of this instrument as planned would have both a technological and a cost advantage over combinations of diagnostics currently available.