資源描述:
《耐硫甲烷化催化劑的研究.pdf》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、第220214卷年第101月0期工業(yè)催化Oct.2014INDUSTRIALCATALYSISVo1.22No.10催化劑翩?zhèn)渑c研究耐硫甲烷化催化劑的研究賈中寶,楊振,熊杰明,孫錦昌,張謙溫(1.北京石油化工學(xué)院,北京102617;2.北京化工大學(xué),北京100029)摘要:煤制天然氣采用耐硫甲烷化催化劑,減小了反應(yīng)設(shè)備體積,對節(jié)省投資和降低能耗有積極意義。采用等體積浸漬法制備系列Mo—Ni/y—A10。耐硫甲烷化催化劑,并對催化劑活性及耐硫性進(jìn)行評價(jià),考察浸漬液中不同c0和w元素添加量對催化劑活性的影響。結(jié)果表明,耐硫
2、甲烷化催化劑活性中心MoS:和WS2的生成有利于提高CO轉(zhuǎn)化率和CH選擇性,促進(jìn)合成氣生成CH,Co的添加不利于提高催化劑的CO轉(zhuǎn)化率和CH選擇性,而w元素的添加有利于提高催化劑的CO轉(zhuǎn)化率和CH4選擇性。在反應(yīng)溫度550℃、壓力2MPa和空速1800h條件下,/'t(H2):凡(co)=1:1時(shí),CO轉(zhuǎn)化率為64.24%,CH選擇性為52.00%。(H):n(co)=3:1時(shí),CO轉(zhuǎn)化率為77.90%,CH選擇性為68.4l%。關(guān)鍵詞:催化化學(xué);耐硫甲烷化;鉬鎳基催化劑;等體積浸漬法doi:10.3969/j.iss
3、n.1008-1143.2014.10.011中圖分類號:0643.36;TQ426.94文獻(xiàn)標(biāo)識碼:A文章編號:1008.1143(2014)10-0785-06Researchonsulfur-resistantmethanationcatalystsJIAZhongbao,YANGZhen,XIONGfleming,SUNJinchang,ZHANGQianwen(1.BeijingInstituteofPetrochemicalTechnology,Beijing102617,China;2.BeijingUn
4、iversityofChemicalTechnology,Beijing100029,China)Abstract:Adoptingsulfur—resistantmethanationcatalystforsyntheticnaturalgas(SNG)cangreatlydecreasethevolumeofthereactionequipment,saveinvestmentandreduceenergyconsumption.AseriesofMo-Ni/y-A1203sulfur—resistantmetha
5、nationcatalystswaspreparedbyequivalent—volumeimpregnationmethod.Theactivityandsulfur—resistanceofthecatalysts,andtheeffectofdifferentCoorWcontentsoftheimpregnationliquidoncatalystactivitywereinvestigated.TheresultsshowedthatactivecentresMoS2orWS2ofsulfur-resista
6、ntmethanationcatalysthelpedtoimprovetheconversionofCOandtheselectivitytoCH4,andpromotedthesyntheticgastoproducemethane;theadditionofCowasnotbeneficialtotheenhancementofCOconversionandtheselectivitytoCH4,andtheadditionofWwasinfavoroftheincreaseofCOconversionandth
7、eselectivitytoCHd.COconversionof64.24%andtheselectivitytoCH4of52.00%wereattainedundertheconditionasfollows:reactiontemperature550oC,reactionpressure2MPa,spacevelocity1800h~,andn(H2):(CO)=1:1;whenn(H2):n(CO)=3:1andotherconditionkeptthesame,theconversionofCOreache
8、d77.90%,andtheselectivitytoCH4was68.41%.Keywords:catalyticchemistry;sulfur—resistantmethanation;Mo—Nibasedcatalyst;equivalent—volumeimpregnationmethod收稿日期:2014—04—25作