|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
高镍负载量ni/sio2和低镍负载量ni-ce/sio2催化co甲烷化的比较研究
, PP. 972-977
Keywords: co甲烷化,ni-ce/sio2催化剂,ceo2助剂,镍负载量
Abstract:
？采用等体积浸渍法制备了高镍负载量的13%ni/sio2(13ni/si)催化剂和低镍负载量的7%ni-2%ce/sio2(7ni-2ce/si)催化剂.通过n2物理吸附、xrd、ft-ir、tem、h2-tpr/tpd等技术对催化剂进行表征,在连续流动微反装置上考察了催化剂的co甲烷化活性.结果表明,在7ni-2ce/si催化剂中nio、ceo2和sio2之间产生的相互作用,改变了ni-o-si键的化学环境,促进了氧化镍物种的分散和还原,进而提高了催化剂的活性比表面积,同时在催化剂表面形成了新的中等强度的co吸附中心.与高镍负载量的13ni/si催化剂相比,低镍负载量的7ni-2ce/si表现出更高的co吸附能力和甲烷化活性.常压下,在co体积分数1%和空速7000h-1的反应条件下,低镍负载量的7ni-2ce/si催化剂上co完全甲烷化最低温度为230℃,比高镍负载量的13ni/si低了30℃.
| [1] | wangyz,wurf,zhaoyx.effectofzro2promoteronstructureandcatalyticactivityoftheni/sio2catalystforcomethanationinhydrogen-richgases[j].cataltoday,2010,158(3/4):470-474.
|
| [2] | tohjik,udagawhy,tanabes,uenoa.catalystpreparationprocedureprobedbyexafsspectroscopy.1.nickelonsilica[j].jamchemsoc,1984,106(3):612-617.
|
| [3] | velus,gangwalsk.synthesisofaluminasupportednickelnanoparticlecatalystsandevaluationofnickelmetaldispersionsbytemperatureprogrammeddesorption[j].solidstateion,2006,177(7/8):803-811.
|
| [4] | gaoxq,wangyz,liht,zhaoyx.effectofmanganesepromoteronthecatalyticperformanceofni/γ-al2o3catalystforco2methanation[j].journalofmolecularcatalysis(china),2011,25(1):49-53.
|
| [5] | wurf,zhangy,wangyz,gaocg,zhaoyx.effectofzro2promoteronthecatalyticactivityforcomethanationandadsorptionperformanceoftheni/sio2catalyst[j].journaloffuelchemistryandtechnology,2009,37(5):578-582.
|
| [6] | parked,leed,leehc.recentprogressinselectivecoremovalinah2-richstream[j].cataltoday,2009,139(4):280-289.
|
| [7] | wangn,sunzj,wangyz,gaoxq,zhaoyx.preparationofbimetallicni-fe/γ-al2o3catalystanditsactivityforcomethamation[j].journaloffuelchemistryandtechnology,2011,39(3):219-223.
|
| [8] | wanfbw,shangyg,dinggz,wanghy,wanged,lizh,maxb,qinsd,sunq.ceria-aluminacompositesupportonthesulfur-resistantmethanationactivityofmo-basedcatalyst[j].journaloffuelchemistryandtechnology,2012,40(11):1390-1396.
|
| [9] | gallettic,specchias,saraccogandspecchiav.coselectivemethanationoverru/γ-al2o3catalystsinh2-richgasforpemfcapplications[j].chemengsci,2010,65(1):590-596.
|
| [10] | daglera,wangy,xiagg,strohmjj,holladayj,palodr.selectivecomethanationcatalystsforfuelprocessingapplications[j].applcatala:gen,2007,326(2):213-218.
|
| [11] | trimmdl.minimisationofcarbonmonoxideinahydrogenstreamforfuelcellapplication[j].applcatala:gen,2005,296(1):1-11.
|
| [12] | songl,chenth,liyx,liuhb,kongdj,chend.performanceofpalygorskitesupportedcu-mn-cecatalystforcatalyticoxidationoftoluene[j].chinesejournalofcatalysis,2011,32(4):652-656.
|
| [13] | wangw,wangjb,zhuwp,yangsx,hewj,chunx.catalyticwetairoxidationofaceticacidandphenolwithru/zro2-ceo2catalysts[j].journalofmolecularcatalysis(china),2007,21(5):401-405.
|
| [14] | zhaobx,liulx,zhangyz,caox,zhangxl,jinqt.effectofdopedceo2loadingoncatalyticactivityofcu-ni-ce/sio2catalyst[j].journalofmolecularcatalysis(china),2008,22(6):507-512.
|
| [15] | liaoql,liangzc,qinyn,tianjx.promotingeffectsofla2o3andceo2oncatalyticactivityofnicatalysts[j].journalofthechinesesocietyofrareearths,1995,13(1):35-38.
|
| [16] | jinrc,chenyx,liwz,jiyy,qinys,jiangy.ni/α-al2o3catalystforthepartialoxidationofmethanetosyngas[j].actaphysico-chimicasnica,1998,14(8):737-741.
|
| [17] | zhengwq,zhangj,geqj,xuhy,liwz.effectsofceo2additiononni/al2o3catalystsforthereactionofammoniadecompositiontohydrogen[j].applcatalb:environ,2008,80(1/2):98-105.
|
| [18] | lifm,wangyz,zhangz,zhaoyx.promotingeffectsofcepromoteroncatalyticactivityofni/sio2catalystforcomethanation[j].indcatal,2011,19(11):70-74.
|
| [19] | weisq,lilb,shuangyc,xuhy,xugl.studyonperformanceofco-precipitatedni-la2o3/zro2catalystforco2methanation[j].natgaschemind,2004,29(5):10-13.
|
| [20] | lugz,wangr.effectofceo2ontheadsorptioncapacityofno,coonthecu-mn-ocatalyst[j].journalofthechinesesocietyofrareearths,1993,11(4):311-316.
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
