CAJ | 학술논문

为有效利用瓦斯资源，研究了瓦斯选择氧化制甲醇的反应条件及机理．以PdCl 2为前驱体，采用浸渍法制备了Pd/C催化剂，进而对醋酸水溶液中Pd/C催化瓦斯选择氧化制甲醇的反应条件进行了实验研究，结果表明，目标产物甲醇生成量与催化剂添加量、对苯醌用量、溶剂中CH3 COOH与H2 O的混合比例、反应温度和反应时间正相关．采用3％Pd/C为催化剂时，在3％Pd/C添加量2g、对苯醌用量1000μmol、CH3 COOH与H2 O体积比4：1、反应温度130℃、反应时间3h条件下，甲醇的生成量为1960μmol．此外，利用瓦斯选择氧化实验和XRD谱图表征技术研究了Pd/C催化剂循环使用对瓦斯氧化制甲醇的影响．分析实验结果，认为Pd/C在醋酸溶液中催化瓦斯选择氧化制甲醇反应，既遵循亲电取代机理，又遵循活性氧物种氧化机理．
위유효이용와사자원，연구료와사선택양화제갑순적반응조건급궤리．이PdCl 2위전구체，채용침지법제비료Pd/C최화제，진이대작산수용액중Pd/C최화와사선택양화제갑순적반응조건진행료실험연구，결과표명，목표산물갑순생성량여최화제첨가량、대분곤용량、용제중CH3 COOH여H2 O적혼합비례、반응온도화반응시간정상관．채용3％Pd/C위최화제시，재3％Pd/C첨가량2g、대분곤용량1000μmol、CH3 COOH여H2 O체적비4：1、반응온도130℃、반응시간3h조건하，갑순적생성량위1960μmol．차외，이용와사선택양화실험화XRD보도표정기술연구료Pd/C최화제순배사용대와사양화제갑순적영향．분석실험결과，인위Pd/C재작산용액중최화와사선택양화제갑순반응，기준순친전취대궤리，우준순활성양물충양화궤리．
This paper referred to the catalyst prepared by taking PdCl 2 as the precursor , and investigated the reaction conditions of the selective oxidation of mine gas to methanol in the aqueous solution of acetic acid o -ver Pd/C catalyst.The results show that the production of the target product , i.e.methanol is positively related to the addition of the catalyst , the addition of p-benzoquinone , the mixing proportion of CH 3 COOH and H2 O in the solvent , the temperature and time of reaction .In case of the use of 3%Pd/C as the catalyst , the production of methanol is 1960μmol in the condition that the addition of the 3%Pd/C is 2g, the addition of p-benzoqui-none is 1000μmol, the volume ratio between CH 3 COOH and H2 O is 4:1, the temperature is 130℃, and the re-action time is 3h.Moreover, effect of recycled Pd/C catalyst on selective oxidation of mine gas to methanol is studied .The methanol synthesized by catalyzing the selective oxidation of gas in the acetic acid solution through Pd/C may be the result for the joint action of electrophilic substitution reaction and oxidation of reactive oxygen species .