采用XRD,NH3-TPD及氘代乙腈吸附FT-IR等技术表征了静态水热合成法合成的MCM-22分子筛的晶相结构和酸性. 根据表征结果,Si/Al比为15和30的两个样品均为高纯度的MCM-22分子筛; 两个样品的Brnsted酸量基本相同,但Si/Al为15的样品上含有相对较高的Lewis酸量. MCM-22分子筛上1-丁烯骨架异构化反应的结果表明,Si/Al为30的样品具有较高的异丁烯选择性(74.8%)和稳定性, 而Si/Al为15的样品中存在的含量较高的Lewis酸位可能是导致异丁烯选择性(65.5%)下降的主要原因.
参考文献
| [1] | 王战,刘希尧.异构化制取异丁烯的工艺技术[J].石油化工,1999(09):636-639. |
| [2] | 汪哲明,阎子峰.丁烯异构化催化剂进展[J].石油化工,2002(04):311-315. |
| [3] | Gielgens L H;Veenstra I H E;Ponec V;Haanepen M J,Van Hooff J H C .[J].Catalysis Letters,1995,32(1,2):195. |
| [4] | Mooiweer H H;De Jong K P;Kraushaar-Czarnetzki B;Stork W H J,Krutzen B C H .[J].Studies in Surface Science and Catalysis,1994,84(C):2327. |
| [5] | Byggningsbacka R;Lindfors L E;Kumar N .[J].Industrial and Engineering Chemistry Research,1997,36(08):2990. |
| [6] | Xu W Q;Yin Y G;Suib S L;O'young C L .[J].Journal of Catalysis,1994,150(01):34. |
| [7] | Leonowicz M E;Lawton J A;Lawton S L;Rubin M K .[J].科学,1994,264(5167):1910. |
| [8] | 商永臣,张文祥,李彤,吴通好.MCM-49分子筛催化剂上1-丁烯的骨架异构化反应[J].催化学报,2004(02):158-162. |
| [9] | Asensi MA.;Martinez A.;Corma A. .SKELETAL ISOMERIZATION OF 1-BUTENE ON MCM-22 ZEOLITE CATALYST[J].Journal of Catalysis,1996(2):561-569. |
| [10] | Okumura K;Hashimoto M;Mimura T;Niwa M .[J].Journal of Catalysis,2002,206(01):23. |
| [11] | Canizares P.;Carrero A. .Comparative study of the catalytic properties of ferrierite zeolite exchanged with alkaline earth metals in the skeletal isomerization of n-butene[J].Catalysis Letters,2000(2/4):239-246. |
| [12] | Cejka J;Krejci A;Zilkova N;Kotrla J,Stefan E,Weber A .[J].Microporous and Mesoporous Materials,2002,53(1-3):121. |
| [13] | Wichterlová B;Tvaruzková Z;Sobalik Z;Sarv P .[J].Microporous and Mesoporous Materials,1998,24(4-6):223. |
| [14] | Rubin M K;Chu P .[P].U S 4 954 325,1990. |
| [15] | 刘中清,王一萌,傅军,何鸣元.静态水热晶化法高效合成MCM-22分子筛[J].催化学报,2002(05):439-442. |
| [16] | Meloni D;Laforge S;Martin D;Guisnet M,Rombi E,Solinas V .[J].Applied Catalysis A:General,2001,215(1-2):55. |
| [17] | Gao S.;Moffat JB. .The isomerization of 1-butene on stoichiometric and nonstoichiometric boron phosphate: The dependence of the acidity on stoichiometry[J].Journal of Catalysis,1998(2):142-148. |
| [18] | Wichterlová B;Zilková N;Uvarova E;Cejka J,Sarv P,Paganini C,Lercher J A .[J].Applied Catalysis A:General,1999,182(02):297. |
| [19] | Simon M W;Suib S L;O'Young C L .[J].Journal of Catalysis,1994,147(02):484. |
| [20] | Houzvicka J.;Ponec V.;Hansildaar S. .THE SHAPE SELECTIVITY IN THE SKELETAL ISOMERISATION OF N-BUTENE TO ISOBUTENE[J].Journal of Catalysis,1997(1):273-278. |
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