Abstract

A study on the efficiency of glass fiber catalysts (GFCs) in the oxidation of hydrogen in a carbon dioxide medium at elevated pressure is performed. Catalyst samples were synthesized from platinum, palladium (as active metals), and heat-resistant high-silica glass fibers, both unmodified and modified with Zr. Catalysts are prepared via surface thermal synthesis and leaching with impregnation. All three tested samples show approximately the same activity, but Pt-based STS is preferred because it uses a much cheaper and widely available glass fibers instead of rare and expensive Zr-modified materials. More than 200 h of life tests for this catalyst show its high stability. The rate of hydrogen oxidation on this catalyst can be described by a kinetic equation corresponding to the law of mass action with a linear dependence on the pressure in the reaction system. The studied GFC can be made in the form of structured cartridges with a small drop in pressure and high intensity of heat and mass transfer under the conditions of the industrial technological process, so its future practical application seems promising.

中文翻译：

---

Pt/Pd 玻璃纤维催化剂在高压下二氧化碳介质中氢氧化的实验研究和动力学

摘要

研究了玻璃纤维催化剂 (GFC) 在高压下二氧化碳介质中氢气氧化的效率。催化剂样品由未改性和用 Zr 改性的铂、钯（作为活性金属）和耐热高硅玻璃纤维合成。催化剂是通过表面热合成和浸渍浸出制备的。所有三个测试样品都显示出大致相同的活性，但基于 Pt 的 STS 是首选，因为它使用更便宜且广泛使用的玻璃纤维而不是稀有且昂贵的 Zr 改性材料。该催化剂超过200小时的寿命试验表明其具有很高的稳定性。该催化剂上的氢氧化速率可以通过与质量作用定律相对应的动力学方程描述，与反应系统中的压力呈线性关系。所研究的GFC在工业化工艺条件下可制成压降小、传热传质强度高的结构化滤芯，未来的实际应用前景广阔。