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大气中CO2 含量的增加是导致最严重环境污染———温室效应的主要原因 ,因此 ,人们对CO2 的固定及利用越来越重视 ,目前对水溶液悬浮体系光催化还原CO2 研究得比较多 ,气 -固光催化体系中 ,常温常压下合成CO2 +H2 为有机物少有报道 .通过对几种TiO2 型催化剂在悬浮体光催化体系中CO2 催化活性的比较 ,选择了活性较高的Pd/RuO2 /TiO2 催化剂 ,采用原位红外的实验方法对CO2 加氢反应及其产物进行了研究 ,结果表明常温常压下光催化CO2 加氢合成一碳化合物是可能的 ,以Al2 O3 为载体的Pd/RuO2 /TiO2 催化剂表面光催化CO2 加氢合成了一碳化合物如甲酸 .甲醛 .甲醇等 .
The increase of CO2 content in the atmosphere is the main cause of the most serious environmental pollution --- the greenhouse effect. Therefore, people pay more and more attention to CO2 fixation and utilization. At present, there are more studies on photocatalytic reduction of CO2 in aqueous suspension systems. - Solid-state catalytic system, synthesis of CO2 + H2 under normal temperature and pressure for the organic rarely reported.By comparing the catalytic activity of several TiO2-based catalysts in the suspension photocatalytic system, the higher activity of Pd / RuO2 / TiO2 catalyst, in-situ infrared experimental CO2 hydrogenation and its products were studied, the results show that under normal temperature and pressure CO2 hydrogenation synthesis of carbon compounds is possible to Al2 O3 as a carrier of Pd / Photocatalytic CO2 Hydrogenation over RuO2 / TiO2 Catalysts to Synthesize One-Carbon Compounds such as Formic Acid, Formaldehyde, Methanol and the like.