Manipulation of hydroisomerization performance on Pt/ZSM-23 by introducing Al<sub>2</sub>O<sub>3</sub>

BAI Di; MENG Ji-peng; ZOU Chi; LI Chuang; LIANG Chang-hai

doi:10.1016/S1872-5813(22)60034-3

Volume 51 Issue 2

Jan. 2023

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Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(2): 175-185

BAI Di, MENG Ji-peng, ZOU Chi, LI Chuang, LIANG Chang-hai. Manipulation of hydroisomerization performance on Pt/ZSM-23 by introducing Al2O3[J]. Journal of Fuel Chemistry and Technology, 2023, 51(2): 175-185. doi: 10.1016/S1872-5813(22)60034-3

Citation:

BAI Di, MENG Ji-peng, ZOU Chi, LI Chuang, LIANG Chang-hai. Manipulation of hydroisomerization performance on Pt/ZSM-23 by introducing Al₂O₃[J]. Journal of Fuel Chemistry and Technology, 2023, 51(2): 175-185. doi: 10.1016/S1872-5813(22)60034-3

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Manipulation of hydroisomerization performance on Pt/ZSM-23 by introducing Al₂O₃

doi: 10.1016/S1872-5813(22)60034-3

Laboratory of Advanced Materials and Catalytic Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China

Funds: The project was supported by the the National Natural Science Foundation of China (22038008), Liaoning Revitalization Talent Program (XLYC1908033), Dalian Innovation Team Support Plan in Key Areas (2019RT10) and the Fundamental Research Funds for the Central Universities (DUT21TD103).

Received Date: 2022-04-29
Accepted Date: 2022-05-23
Rev Recd Date: 2022-05-17

Available Online: 2022-06-09

Publish Date: 2023-01-18

Abstract

Abstract

ZSM-23 zeolite was successfully synthesized in a dual-template system, and ZSM-23-Al₂O₃ composites with different ratios were also prepared. The hydroisomerization performance of Pt/ZSM-23 catalyst was manipulated by introducing Al₂O₃, and the influence of Al₂O₃on physicochemical properties was investigated by XRD, SEM, TEM, N₂ physical adsorption-desorption and NH₃-TPD characterizations. The results showed that Al₂O₃ improved the dispersion of Pt, significantly reduced the acid sites concentration of the catalyst, and regulated the metal-acid balance in quantitative. The suitable metal-acid balance concentration could improve the selectivity of isomers and suppress the cracking reactions. Meanwhile, Al₂O₃ dispersed the ZSM-23 grains, which improved the dispersion and increased the number of exposed pores in ZSM-23. Thus the diffusion efficiency of reactants and intermediates could be promoted and the isomer products selectivity could be improved. All composite catalysts showed high selectivity of isomer products, among which, Pt/(9Z-1Al) had the highest yield of isomer products due to its suitable metal-acid concentration balance, reached 60% at 340 ℃, which was a significant improvement compared with Pt/ZSM-23 (42%). When the reaction temperature was lower than 310 ℃, the pore mouth mechanism dominated in Pt/ZSM-23, while the key-lock mechanism was significantly strengthened at higher reaction temperature. After the introduction of Al₂O₃, more adjacent pores in ZSM-23 were exposed and the key-lock mechanism became the domination, which led to a large number of 7/8Me-C₁₅ isomers.
- ZSM-23,
- Al₂O₃,
- hydroisomerization,
- n-hexadecane

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References(34)

References

[1]	ZHANG S, ZHANG Y, TIERNEY J W, WENDER I. Anion-modified zirconia: Effect of metal promotion and hydrogen reduction on hydroisomerization of n-hexadecane and Fischer-Tropsch waxes[J]. Fuel Process Technol,2001,69(1):59−71. doi: 10.1016/S0378-3820(00)00133-8
[2]	CALEMMA V, PERATELLO S, PEREGO C. Hydroisomerization and hydrocracking of long chain n-alkanes on Pt/amorphous SiO₂-Al₂O₃ catalyst[J]. Appl Catal A: Gen,2000,190(1/2):207−218. doi: 10.1016/S0926-860X(99)00292-6
[3]	REGALI F, LIOTTA L F, VENEZIA A M, MONTES V, BOUTONNET M, JRS S. Effect of metal loading on activity, selectivity and deactivation behavior of Pd/silica-alumina catalysts in the hydroconversion of n-hexadecane[J]. Catal Today,2014,223(3):87−96.
[4]	MARTENS J A, VANBUTSELE, JACOBS P A, DENAYER, OCAKOGLU. Evidences for pore mouth and key-lock catalysis in hydroisomerization of long n-alkanes over 10-ring tubular pore bifunctional zeolites[J]. Catal Today,2001,65(2):111−116.
[5]	MARTENS J A, JACOBS P A, WEITKAMP J. Attempts to rationalize the distribution of hydrocracked products. I qualitative description of the primary hydrocracking modes of long chain paraffins in open zeolites[J]. Appl Catal,1986,20(1/2):239−281. doi: 10.1016/0166-9834(86)80020-3
[6]	ZHANG M, LIU Q, LONG H, SUN L, MURAYAMA T, QI C. Insights into Au nanoparticle size and chemical state of Au/ZSM-5 catalyst for catalytic cracking of n-octane to increase propylene production[J]. J Phys Chem C,2021,125(29):16013−16023. doi: 10.1021/acs.jpcc.1c04608
[7]	侯冉冉, 胡志海, 郭庆洲, 毕云飞, 高杰, 李洪辉. 加氢异构催化剂性质对长链烷烃异构行为的影响[J]. 石油学报(石油加工),2022,38(1):20−28. HOU Ran-ran, HU Zhi-hai, GUO Qing-zhou, BI Yun-fei, GAO Jie, LI Hong-hui. Effects of catalysts on catalytic performance in long chain n-alkanes isomerization[J]. Acta Pet Sin(Pet Process Sect),2022,38(1):20−28.
[8]	BURTON A W. A priori phase prediction of zeolites: Case study of the structure-directing effects in the synthesis of MTT-type zeolites[J]. J Am Chem Soc,2007,129(24):7627−7637. doi: 10.1021/ja070303u
[9]	JR A, LAPIERRE R B, SCHLENKER J L, WOOD J D, VALYOCSIK E W, RUBIN M K, HIGGINS J B, ROHRBAUGH W J. The framework topology of ZSM-23: A high silica zeolite[J]. Zeolites,1985,5(6):352−354. doi: 10.1016/0144-2449(85)90123-X
[10]	HOLZINGER J, NIELSEN M, BEATO P, BROGAARD R Y, BUONO C, DYBALLA M. Identification of distinct framework aluminum sites in zeolite ZSM-23: A combined computational and experimental 27Al NMR study[J]. J Phys Chem C,2019,123(13):7831−7844. doi: 10.1021/acs.jpcc.8b06891
[11]	DEGNAN T F. Applications of zeolites in petroleum refining[J]. Top Catal,2000,13(4):349−356. doi: 10.1023/A:1009054905137
[12]	HENGSAWAD T, SRIMINGKWANCHAI C, BUTNARK S, RESASCO D E, JONGPATIWUT S. Effect of metal-acid balance on hydroprocessed renewable jet fuel synthesis from hydrocracking and hydroisomerization of biohydrogenated diesel over Pt-supported catalysts[J]. Ind Eng Chem Res,2018,57(5):1429−1440. doi: 10.1021/acs.iecr.7b04711
[13]	CHEN Y, LI C, WANG L, ZHANG M, LIANG C. Seed-assisted synthesis of ZSM-23 zeolites in the absence of alkali metal ions[J]. Microporous Mesoporous Mater,2017,252:146−153. doi: 10.1016/j.micromeso.2017.06.013
[14]	HUYBRECHTS W, THYBAUT J W, DE WAELE B R, VANBUTSELE G, HOUTHOOFD K J, BERTINCHAMPS F, DENAYER J F M, GAIGNEAUX E M, MARIN G B, BARON G V, JACOBS P A, MARTENS J A. Bifunctional catalytic isomerization of decane over MTT-type aluminosilicate zeolite crystals with siliceous rim[J]. J Catal,2006,239(2):451−459. doi: 10.1016/j.jcat.2006.02.020
[15]	SMIRNOVA M Y, PIRYUTKO L V, BRESTER Y S, PARFENOV M V, NOSKOV A S. Effect of the ZSM-23 synthesis method on the properties of Pt/ZSM-23/Al₂O₃ catalysts in n-decane conversion[J]. Pet Chem,2020,60(2):212−218. doi: 10.1134/S0965544120020085
[16]	HUYBRECHTS W, VANBUTSELE G, HOUTHOOFD K J, BERTINCHAMPS F, NARASIMHAN C, GAIGNEAUX E M. Skeletal isomerization of octadecane on bifunctional ZSM-23 zeolite catalyst[J]. Catal Lett,2005,100(3/4):235−242. doi: 10.1007/s10562-004-3461-6
[17]	CHEN Y, LI C, CHEN X, LIU Y, LIANG C. Synthesis of ZSM-23 zeolite with dual structure directing agents for hydroisomerization of n-hexadecane[J]. Microporous Mesoporous Mater,2018,268:216−224. doi: 10.1016/j.micromeso.2018.04.033
[18]	ALVAREZ F, RIBEIRO F R, PEROT G, THOMAZEAU C, GUISNET M. Hydroisomerization and hydrocracking of alkanes: 7. Influence of the balance between acid and hydrogenating functions on the transformation of n-decane on PtHY catalysts[J]. J Catal,1996,162(2):179−189. doi: 10.1006/jcat.1996.0275
[19]	ZHANG Y, LIU D, LOU B, YU R, MEN Z. Hydroisomerization of n-decane over micro/mesoporous Pt-containing bifunctional catalysts: Effects of the MCM-41 incorporation with Y zeolite[J]. Fuel,2018,226(15):204−212.
[20]	BATALHA N, PINARD L, BOUCHY C, GUILLON E, GUISNET M. n-Hexadecane hydroisomerization over Pt-HBEA catalysts. Quantification and effect of the intimacy between metal and protonic sites[J]. J Catal,2013,307:122−131. doi: 10.1016/j.jcat.2013.07.014
[21]	向江南, 刘伟, 刘成连, 王琰, 陈树伟, 毕士楠, 范彬彬, 李瑞丰. 低硅铝比ZSM-48分子筛合成及其正构十二烷临氢异构催化性能研究[J]. 燃料化学学报,2020,48(1):83−90. doi: 10.3969/j.issn.0253-2409.2020.01.010 XIANG Jiang-nan, LIU Wei, LIU Cheng-lian, WANG Yan, CHEN Shu-wei, BI Shi-nan, FAN Bin-bin, LI Rui-feng. Synthesis and hydroisomerization performance of n-C₁₂ over ZSM-48 molecular sieve with low silicon-aluminum ratio[J]. J Fuel Chem Technol,2020,48(1):83−90. doi: 10.3969/j.issn.0253-2409.2020.01.010
[22]	MÖLLER K, BEIN T. Crystallization and porosity of ZSM-23[J]. Microporous Mesoporous Mater,2011,143(2):253−262.
[23]	戴清, 杨玉旺, 裴仁彦, 吴同旭, 蔡奇, 郭秋双. ZSM-23/活性氧化铝复合催化剂在甲醇脱水反应中的应用研究[J]. 无机盐工业,2018,50(2):70−74. DAI Qing, YANG Yu-wang, PEI Ren-yan, WU Tong-xu, CAI Qi, GUO Qiu-shuang. Study on application of ZSM-23/active Al₂O₃ composite catalysts in methanol dehydration reaction[J]. Inorg Chem Ind,2018,50(2):70−74.
[24]	LV G, WANG C, CHI K, LIU H, WANG P, MA H, QU W, TIAN Z. Effects of Pt site distributions on the catalytic performance of Pt/SAPO-11 for n-dodecane hydroisomerization[J]. Catal Today,2018,316:43−50. doi: 10.1016/j.cattod.2018.04.072
[25]	ZECEVIC J, VANBUTSELE G, DE JONG K P, MARTENS J A. Nanoscale intimacy in bifunctional catalysts for selective conversion of hydrocarbons[J]. Nature,2015,528(7581):245−248. doi: 10.1038/nature16173
[26]	BEN MOUSSA O, TINAT L, JIN X, BAAZIZ W, DURUPTHY O, SAYAG C, BLANCHARD J. Heteroaggregation and selective deposition for the fine design of nanoarchitectured bifunctional catalysts: Application to hydroisomerization[J]. ACS Catal,2018,8(7):6071−6078. doi: 10.1021/acscatal.8b01461
[27]	CHENG K, WAL L I, YOSHIDA H, OENEMA J, HARMEL J. Impact of the spatial organization of bifunctional metal-zeolite catalysts on the hydroisomerization of light alkanes[J]. Angew Chem Int Ed,2020,132(9):3620−3628. doi: 10.1002/ange.201915080
[28]	BATALHA N, PINARD L, POUILLOUX Y, GUISNET M. Bifunctional hydrogenating/acid catalysis: Quantification of the intimacy criterion[J]. Catal Lett,2013,143(6):587−591. doi: 10.1007/s10562-013-1003-9
[29]	TIAN S, CHEN J. Hydroisomerization of n-dodecane on a new kind of bifunctional catalyst: Nickel phosphide supported on SAPO-11 molecular sieve[J]. Fuel Process Technol,2014,122:120−128. doi: 10.1016/j.fuproc.2014.01.031
[30]	KINGER G, VINEK H. n-Nonane hydroconversion on Ni and Pt containing HMFI, HMOR and HBEA[J]. Appl Catal A: Gen,2001,218(1):139−149.
[31]	MENG J, CUI T, BAI D, LI C, CHEN X, LIANG C. Excellent catalytic performance over hierarchical ZSM-48 zeolite: Cooperative effects of enhanced mesoporosity and highly-accessible acidity[J]. Fuel,2022,324:124589.
[32]	宁强, 刘粟侥, 张怀科, 陈志强, 任杰. 金属前躯体溶剂对Pt/ZSM-22催化剂临氢异构性能的影响[J]. 燃料化学学报,2018,46(12):1454−1461. doi: 10.3969/j.issn.0253-2409.2018.12.006 NING Qiang, LIU Su-yao, ZHANG Huai-ke, CHEN Zhi-qiang, REN Jie. Effect of metal precursor solvent on n-dodecane isomerization of Pt/ZSM-22[J]. J Fuel Chem Technol,2018,46(12):1454−1461. doi: 10.3969/j.issn.0253-2409.2018.12.006
[33]	宋成业, 孟记朋, 李闯, 帕哈尔·泽耀东, 梁长海. ZSM-22/ZSM-23共晶分子筛的合成及其正十六烷加氢异构催化性能(英文)[J]. 燃料化学学报,2021,49(5):712−726. doi: 10.1016/S1872-5813(21)60061-0 SONG Cheng-ye, MENG Ji-peng, LI Chuang, ZEYAODONG P, LIANG Chang-hai. Synthesis of ZSM-22/ZSM-23 intergrowth zeolite as the catalyst support for hydroisomerization of n-hexadecane[J]. J Fuel Chem Technol,2021,49(5):712−726. doi: 10.1016/S1872-5813(21)60061-0
[34]	WEI C, ZHANG G, ZHAO L, GAO J, XU C. Effect of metal-acid balance and textual modifications on hydroisomerization catalysts for n-alkanes with different chain length: A mini-review[J]. Fuel,2021,315:122809.