Performance of Particulate and Structured Pt/TiO2-Based Catalysts for the WGS Reaction under Realistic High- and Low-Temperature Shift Conditions

The water–gas shift (WGS) activity of Pt/TiO2-based powdered and structured catalysts was investigated using realistic feed compositions that are relevant to the high-temperature (HTS) low-temperature (LTS) reaction conditions. promotion TiO2 support with small amounts alkali- or alkaline earth-metals resulted in enhancement WGS 0.5%Pt/TiO2(X) (X = Na, Cs, Ca, Sr). use bimetallic (Pt–M)/TiO2 (M Ru, Cr, Fe, Cu) can also CO conversion curve toward lower temperatures, but this is accompanied by production relatively large unwanted CH4 at temperatures above ca. 300 °C. Among investigated, Pt/TiO2(Ca) exhibited best performance under both HTS LTS Therefore, material selected for preparation form pellets as well ceramic metallic catalyst monoliths. 0.5%Pt/TiO2(Ca) pellet comparable a commercial catalyst, its further improved when Pt loading increased 1.0 wt.%. results were obtained sample coated on monolith, which excellent 300–350 °C temperature range. In conclusion, proper selection structure parameters curves sufficiently low rendering suitable practical applications.