【摘要】 在固定床流动反应装置上考察了不同反应条件对Ｍｇ调变Ｎｉ基催化剂反应性能的影响。当催化剂床层径高比约为２，空速２０×１０５ｈ－１，床层最高温度９４０℃，Ｖ（ＣＨ４）／Ｖ（Ｏ２）＝２０时，甲烷转化率９７％，ＣＯ选择性９８％，Ｈ２选择性接近１００％。５００ｈ的稳定性考察结果表明，甲烷转化率大于９０％，ＣＯ及Ｈ２选择性均大于９５％。反应后的催化剂经ＳＥＭ分析没观察到积炭。更多还原

【Abstract】 EffectsofvariousreactionconditionsoncatalyticperformanceofaMgmodifiedNicatalysthavebeeninvestigatedforpartialoxidationofmethanetosyngasinafixedbedflowreactor.WhentheH/Dratioofthecatalystbedapproaches2withthereactionconditionsbeingGHSV20105h-1,bedtemperature900(max.),andm(CH4)/m(O2)molarration20,CH4conversionisupto97%,andselectivitiestoCOandH2are98%andalmost100%,respectively.Duringastabilitytestfor500hours,CH4conversionmaintainsmorethan90%,andtheselectivitiestoCOandH2arebothhigherthan95%.TheSEMresultofthereactedcatalystshowsthatnocarbondepositionoccurs.更多还原