CN109336130A - 一种由葡聚糖调控制备的多级孔mtt结构分子筛、制备方法及用途 - Google Patents
一种由葡聚糖调控制备的多级孔mtt结构分子筛、制备方法及用途 Download PDFInfo
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- CN109336130A CN109336130A CN201811254106.9A CN201811254106A CN109336130A CN 109336130 A CN109336130 A CN 109336130A CN 201811254106 A CN201811254106 A CN 201811254106A CN 109336130 A CN109336130 A CN 109336130A
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- 229920001503 Glucan Polymers 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002808 molecular sieve Substances 0.000 title abstract description 37
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 title abstract description 37
- 239000002149 hierarchical pore Substances 0.000 title abstract 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 239000011148 porous material Substances 0.000 claims abstract description 12
- 150000001335 aliphatic alkanes Chemical class 0.000 claims abstract description 8
- 239000000047 product Substances 0.000 claims description 50
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 239000000377 silicon dioxide Substances 0.000 claims description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000006317 isomerization reaction Methods 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 229910052681 coesite Inorganic materials 0.000 claims description 9
- 229910052906 cristobalite Inorganic materials 0.000 claims description 9
- 229910052682 stishovite Inorganic materials 0.000 claims description 9
- 229910052905 tridymite Inorganic materials 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 150000002460 imidazoles Chemical class 0.000 claims description 3
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- PWSKHLMYTZNYKO-UHFFFAOYSA-N heptane-1,7-diamine Chemical compound NCCCCCCCN PWSKHLMYTZNYKO-UHFFFAOYSA-N 0.000 claims description 2
- 239000012265 solid product Substances 0.000 claims description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 claims 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 10
- 239000002199 base oil Substances 0.000 description 8
- DCAYPVUWAIABOU-UHFFFAOYSA-N hexadecane Chemical compound CCCCCCCCCCCCCCCC DCAYPVUWAIABOU-UHFFFAOYSA-N 0.000 description 8
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- KDSNLYIMUZNERS-UHFFFAOYSA-N 2-methylpropanamine Chemical compound CC(C)CN KDSNLYIMUZNERS-UHFFFAOYSA-N 0.000 description 4
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- 239000000446 fuel Substances 0.000 description 2
- DCAYPVUWAIABOU-NJFSPNSNSA-N hexadecane Chemical class CCCCCCCCCCCCCCC[14CH3] DCAYPVUWAIABOU-NJFSPNSNSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
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- 239000000126 substance Substances 0.000 description 2
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- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Chemical compound OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 229920000168 Microcrystalline cellulose Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical group [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- WQZGKKKJIJFFOK-UHFFFAOYSA-N alpha-D-glucopyranose Natural products OCC1OC(O)C(O)C(O)C1O WQZGKKKJIJFFOK-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
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- 238000009833 condensation Methods 0.000 description 1
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- 239000000470 constituent Substances 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
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- 210000003097 mucus Anatomy 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- -1 polysaccharide compound Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
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- 230000028327 secretion Effects 0.000 description 1
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- 230000009967 tasteless effect Effects 0.000 description 1
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- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/46—Other types characterised by their X-ray diffraction pattern and their defined composition
- C01B39/48—Other types characterised by their X-ray diffraction pattern and their defined composition using at least one organic template directing agent
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- C01B39/04—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof using at least one organic template directing agent, e.g. an ionic quaternary ammonium compound or an aminated compound
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Abstract
本发明公开了一种多级孔MTT结构分子筛，其含有介孔和微孔，其比表面积为400m2/g以上，所述介孔孔径为2‑20nm，所述微孔的孔道尺寸为0.52nm×0.45nm。本发明还公开了所述多级孔MTT结构分子筛的由葡聚糖调控的制备方法及用于催化剂载体在正烷烃临氢异构反应提高产物中单支链异构产物收率的用途。
Description
技术领域
本发明属于催化剂技术领域，具体涉及一种由葡聚糖调控制备的多级孔MTT结构分子筛、制备方法及用途。
背景技术
石油产品中，润滑油、喷气燃料等都是注重低温下的各种性质，尤其是凝点、冰点等。近年来，煤通过费托合成法得到的烃类产物更加洁净，具有无硫、无氮、低芳烃的特点，作为制造燃料、润滑油基础油等的原料油而受到瞩目。从润滑油降低倾点来说，并不希望生成有很多支链的异构体，蜡的异构化希望生成少支链异构体，特别是在中央有一个支链时倾点较低。
对于润滑油基础油的异构脱蜡反应一般使用微孔MTT结构分子筛负载金属活性组分Pt、Pd等第Ⅷ族元素制备的催化剂。MTT结构分子筛的孔道尺寸一般为0.52nm×0.45nm左右，其结构对多支链异构产物的生成和扩散进行限制，导致异构产物发生二次反应，即裂解反应，裂解产物促进积碳的生成，易堵塞催化剂孔道；且只有位于分子筛孔口附近的活性位才对双支链异构体的生成起作用。长链正构烷烃(碳原子数＞15)的异构化反应主要发生在催化剂的孔口处，只有位于分子筛孔口附近的活性位才能起作用。因此，长链烷烃异构化的高活性催化剂要求所用的分子筛具有较多的孔口数目。提高分子筛孔口数量的方法一般有两种：1、制备小晶粒的分子筛，2、合成多级孔结构分子筛。
专利US7390763 B2公开了一种小晶粒MTT结构分子筛的制备方法及其在C10+正构烷烃的异构降凝中的应用，使用小晶粒MTT结构分子筛可以使目标产物收率提高7.14％。专利CN 103153860 A提出了一种不存在胺组分的情况下制备小晶粒分子筛，但是MTT结构分子筛的孔道结构对多支链异构产物的生成和扩散限制导致异构产物发生二次反应，即裂解反应；裂解产物促进积碳的生成，易堵塞催化剂孔道。
专利CN 105645428 A介绍了一种具有介孔-微孔分等级结构的SSZ-32分子筛的制备方法，该方法通过将原料均质化混合后加入淀粉，再经过老化、晶化、煅烧等过程制备得到分等级结构的SSZ-32分子筛，该分子筛在直链烷烃在临氢异构化反应中可以提高异构化产品中多支链异构体的含量，但单支链异构产物含量仍然较低。专利CN 105640607 A介绍了一种具有介孔-微孔分等级结构的SSZ-23分子筛的制备方法，该方法也是通过将原料均质化混合后加入淀粉，再经过老化、晶化、煅烧等过程制备得到分等级结构的SSZ-32分子筛，该分子筛在直链烷烃在临氢异构化反应中也是可以提高异构化产品中多支链异构体的含量，但单支链异构产物含量仍然较低。
上述的分子筛用着催化剂载体，在加氢异构反应中的活性、选择性和稳定性还不够理想，特别是分子筛的比表面积仍然较少；用于正烷烃临氢异构反应，产物中的单支链异构产物含量仍然较低。
葡聚糖又叫右旋糖酐，是葡萄糖单元经脱水后所构成的高分子多糖化合物。自然界中右旋糖酐广泛存在于微生物以及微生物所分泌的粘液中，是构成细胞壁的重要组成部分。右旋糖酐主要是由D-吡喃式葡萄糖以α-1，6键相连接，成一线形长分子链，也有支链点以α-1，2、α-1，3及α-1 4键相连接。右旋糖酐为白色的无定形粉末固体，无臭无味，易溶于水，不溶于乙醇。在常温下或中性溶液中可稳定存在，在碱性溶液中其端基易被氧化，受热时可逐渐变色或分解。右旋糖酐溶于水中能形成具有一定粘度的胶体液，作为增稠剂，而且比淀粉和OMC效果好。
本发明首次在微孔结构分子筛的基础上原位加入微晶纤维素制备晶体内和晶体间介孔，得到多级孔MTT结构分子筛。该多级孔MTT结构分子筛的比表面积较大，在400m2/g以上，用于正烷烃临氢异构反应，表现出优异的活性、选择性和稳定性，可以显著提高产物中单支链异构产物收率。
发明内容
本发明第一方面公开了一种多级孔MTT结构分子筛，其含有介孔和微孔，其比表面积为400m2/g以上，所述介孔孔径为2-20nm，所述微孔的孔道尺寸为0.52nm×0.45nm。
本发明第二方面公开了所述的多级孔MTT结构分子筛的制备方法，其特征在于，包括如下步骤：
(1)将模板剂、碱液、硅源、铝源加入水中混合均匀；
(2)向步骤(1)得到的混合液中加入葡聚糖，在一定温度下进行反应；
(3)将步骤(2)得到的固体产物洗涤至中性，干燥后在煅烧，冷却至室温，即得到所述的多级孔MTT结构分子筛。
优选地，步骤(1)所述的模板剂为咪唑鎓盐、异丁胺、1,7-庚二胺中的一种或几种；所述铝源为十八水和硫酸铝、铝溶胶、硅铝溶胶中的一种或几种；所述硅源为硅溶胶；所述碱液为NaOH或KOH水溶液。
优选地，所述模板剂、碱液、硅源、铝源、葡聚糖和水的摩尔比为：SiO2/Al2O3，15-100；模板剂/SiO2，0.01-0.3；H2O/SiO2，10-80；OH-/SiO2，0.05-0.7；葡聚糖/SiO2，0.1-1.5。
优选地，步骤(2)所述反应条件为：温度为150～180℃，反应时间为3～10天。
优选地，步骤(3)所述煅烧条件为：温度为600℃以上，反应时间为3-5小时。
本发明第三方面公开了所述多级孔MTT结构分子筛用于催化剂载体的用途。
优选地，所述多级孔MTT结构分子筛在正烷烃临氢异构反应中提高产物中单支链异构产物的收率。
本发明的有益效果：
1、本发明的多级孔MTT结构分子筛是分等级孔结构分子筛，既有微孔又有介孔，具有较多的孔口数量、较高的比表面积和孔容、较大的活性位可接近性，作为催化剂载体负载金属活性组分Pt、Pd等第VIII族元素，能够优化多孔催化剂的孔性质和活性位的合理配置，在加氢异构等需要酸性位的反应中具有广阔的应用前景。特别是用于含蜡的长链正构烷烃的异构降凝反应中所需的催化剂，表现出更高的活性和异构选择性，可以显著提高产物中单支链异构产物收率。
2、本发明首次得到比表面积在400m2/g以上的分子筛，用于正烷烃临氢异构反应，表现出优异的活性和选择性，单支链产物与多支连产物摩尔比率在12以上，显著提高了润滑油的质量。
3、本发明的多级孔MTT结构分子筛的制备方法为了弥补微孔分子筛的孔径小、反应物和产物扩散受限和催化活性差等不足，首次原位引入廉价易得的葡聚糖作为共模板剂，葡聚糖富含羟基，在老化温度下自身形成海绵状结构，同时羟基与硅铝结构相互作用，实现了一步法合成微孔-介孔分等级结构的MTT分子筛，在微孔结构的基础上原位制备出晶体内、晶体间丰富的介孔，具有较高的比表面积与孔容。葡聚糖的引入一方面可以作为介孔导向剂在微孔基础上生成介孔，优化了多孔催化剂的孔性质和活性位的合理配置，增加了分子筛的孔口数量和比表面积；二是可以减少有机模板剂的使用，减少环境污染，降低了催化剂的制备成本，有利于多级孔MTT分子筛的大规模应用。且通过调节葡聚糖加入的比例，可以调控级孔分子筛中介微孔比例。
附图说明
图1为对比例制得的微孔MTT结构分子筛和实施例1制得的多级孔MTT结构分子筛的XRD图；
图2为对比例制得的微孔MTT结构分子筛和实施例1制得的多级孔MTT结构分子筛的N2吸附-脱附等温曲线；
图3为对比例制得的微孔MTT结构分子筛和实施例1制得的多级孔MTT结构分子筛对正十六烷临氢异构选择性的对比图。
图4为对比例制得的微孔MTT结构分子筛和实施例1制得的多级孔MTT结构分子筛对正十六烷临氢异构产物中单支链异构产物与多支链异构产物摩尔比值的对比图。
具体实施方式
为了对本发明的技术特征、目的和有益效果更加清楚的理解，现对本发明的技术方案进行以下详细说明，下面的实施例体现了本发明描述的过程，但本发明并不局限于这些实例。
实施例1：
称取1.53g咪唑鎓盐、22.5g高纯水、12.0g氢氧化钾溶液(1mol/L)加入到聚四氟内衬中，搅拌均匀。再向上述的碱性溶液中加入硅铝摩尔比为50的7.62g硅溶胶和2.5g硅铝溶胶、0.9g异丁胺，搅拌均匀。最后再加入葡聚糖，葡聚糖的摩尔量为葡聚糖/SiO2＝0.1，搅拌均匀后，将反应物凝胶装入带聚四氟乙烯内衬水热合成釜中，密封，在自生压力下175℃，晶化8天。
取出晶化产物，冷却，离心分离，并用去离子水洗至中性，在120℃烘箱中干燥；然后将其置于马弗炉中，650℃煅烧6h，即得到所述的多级孔MTT结构分子筛。
得到的多级孔MTT结构分子筛的XRD衍射图谱如图1中的曲线所示，N2吸附-脱附等温曲线如图2中的曲线所示。由图1可知，实施例1原位加入葡聚糖后得到的分子筛产物晶型没有发生改变，仍然是MTT结构分子筛；由图2可知，实施例1得到的分子筛中有介孔存在。
得到的多级孔MTT分子筛比表面积为410m2/g，介孔孔径范围为2-20nm。
实施例2：
具体合成条件类似于实施例1，但葡聚糖加入的摩尔量为葡聚糖/SiO2＝0.5。得到的多级孔MTT分子筛比表面积为415m2/g，介孔孔径范围为2-20nm。
实施例3：
具体合成条件类似于实施例1，但铝源为铝溶胶，硅铝比为65。得到的多级孔MTT分子筛比表面积为420m2/g，介孔孔径范围为2-20nm。
实施例4：
合成条件类似于实施例2，但葡聚糖加入的摩尔量为葡聚糖/SiO2＝1.5，铝源为铝溶胶，硅铝比为65。得到的多级孔MTT分子筛比表面积为400m2/g，介孔孔径范围为2-20nm。
对比例：
除了不加入葡聚糖外，原料与合成条件均与实施例1相同。得到微孔MTT结构分子筛的XRD衍射图谱如图1中的曲线所示，N2吸附-脱附等温曲线如图2中的曲线所示。
实施例5：正十六烷临氢异构反应
将上述实施例1得到的多级孔MTT分子筛和对比例得到的微孔MTT结构分子筛分别作为载体，负载贵金属Pt，负载量为0.5wt％，应用到正十六烷的临氢异构反应中，反应压力5MPa，产物分析结果如表1所示。由表1可以看出，在相同的反应温度下，Pt/多级孔MTT结构分子筛(实施例1)催化剂的转化率和异构量比Pt/微孔MTT结构分子筛(对比例)催化剂的转化率和异构量均大幅提升，产物中单支链异构产物显著提高，单支链产物与多支链产物摩尔比率在270℃下，由不到4以下提高到12以上；说明本发明制得的多级孔MTT结构分子筛应用到正构烷烃的异构降凝反应中，可以高活性、高选择性地制得异构烷烃混合物，显著提高产物中单支链异构产物与多支链异构产物摩尔之比。
异构选择性如图3所示，异构产物中单支链异构产物与多支链异构产物摩尔比值如图4所示。
表1催化性能结果比较
【备注】表1中的“≤C15/wt％”表示产物中碳原子数小于等于15的物质的总质量分数；“异构C16/wt％”表示产物中正十六烷异构体的总质量分数；“异构选择性/％”表示反应物选择性生成正十六烷异构体的百分数；单支链产物/多支连产物表示产物中单支链产物与多支链产物摩尔比。
实施例6：异构脱蜡制备III+润滑油基础油
将上述实施例1得到的多级孔MTT分子筛和对比例得到的微孔MTT结构分子筛分别作为载体，负载贵金属Pt，负载量为0.5wt％，应用到n-C20～n-C60混合正构烷烃的异构脱蜡制备润滑油基础油中。
结果为：实施例1得到多级孔MTT分子筛负载贵金属Pt催化得到的III类+润滑油基础油的收率在50％以上；而在相同条件下，对比例得到微孔MTT结构分子筛作为载体负载贵金属Pt得到的III类+润滑油基础油的收率为30％左右；且实施例1得到多级孔MTT分子筛负载贵金属Pt催化得到的III类+润滑油基础油的粘度指数可以达到140以上，在保持较高收率下，倾点比对比例得到微孔MTT结构分子筛作为载体负载贵金属Pt得到的III类+润滑油基础油的降低幅度可达15％以上。说明本发明制得的具有多级孔MTT结构分子筛负载贵金属Pt催化剂正构烷烃的异构脱蜡反应，可以高活性、高选择性地制得润滑油基础油。
Claims (8)
1.一种多级孔MTT结构分子筛，其特征在于，其含有介孔和微孔，其比表面积为400m2/g以上，所述介孔孔径为2-20nm，所述微孔的孔道尺寸为0.52nm×0.45nm。
2.一种根据权利要求1所述的多级孔MTT结构分子筛的制备方法，其特征在于，包括如下步骤：
(1)将模板剂、碱液、硅源、铝源加入水中混合均匀；
(2)向步骤(1)得到的混合液中加入葡聚糖，在一定温度下进行反应；
(3)将步骤(2)得到的固体产物洗涤至中性，干燥后在煅烧，冷却至室温，即得到所述的多级孔MTT结构分子筛。
3.根据权利要求2所述的制备方法，其特征在于，步骤(1)所述的模板剂为咪唑鎓盐、异丁胺、1,7-庚二胺中的一种或几种；所述铝源为十八水和硫酸铝、铝溶胶、硅铝溶胶中的一种或几种；所述硅源为硅溶胶；所述碱液为NaOH或KOH水溶液。
4.根据权利要求2所述的制备方法，其特征在于，所述模板剂、碱液、硅源、铝源、葡聚糖和水的摩尔比为：SiO2/Al2O3，15-100；模板剂/SiO2，0.01-0.3；H2O/SiO2，10-80；OH-/SiO2，0.05-0.7；葡聚糖/SiO2，0.1-1.5。
5.根据权利要求2所述的制备方法，其特征在于，步骤(2)所述反应条件为：温度为150～180℃，反应时间为3～10天。
6.根据权利要求2所述的制备方法，其特征在于，步骤(3)所述煅烧条件为：温度为600℃以上，反应时间为3-5小时。
7.根据权利要求1所述多级孔MTT结构分子筛用于催化剂载体的用途。
8.根据权利要求7所述的用途，其特征在于，所述多级孔MTT结构分子筛在正烷烃临氢异构反应中提高产物中单支链异构产物的收率。
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| CN112111478A (zh) * | 2020-08-04 | 2020-12-22 | 江苏大学 | 一种介孔Me/UIO-66-Zr MOF材料及其制备方法和应用 |
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| 张瑀健等: ""短轴纳米ZSM-23的合成及异构化功能"", 《高等化学学报》 * |
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| CN109110778A (zh) * | 2018-10-26 | 2019-01-01 | 天津大学 | 一种由脱碱木质素调控制备的多级孔mtt结构分子筛、制备方法及用途 |
| CN109110778B (zh) * | 2018-10-26 | 2021-07-09 | 天津大学 | 一种由脱碱木质素调控制备的多级孔mtt结构分子筛、制备方法及用途 |
| CN112111478A (zh) * | 2020-08-04 | 2020-12-22 | 江苏大学 | 一种介孔Me/UIO-66-Zr MOF材料及其制备方法和应用 |
| CN112111478B (zh) * | 2020-08-04 | 2022-07-05 | 江苏大学 | 一种介孔Me/UIO-66-Zr MOF材料及其制备方法和应用 |
| CN115043414A (zh) * | 2022-06-09 | 2022-09-13 | 青岛科技大学 | 一种多级孔分子筛及其制备方法和应用 |
| CN115043414B (zh) * | 2022-06-09 | 2023-12-29 | 青岛科技大学 | 一种多级孔分子筛及其制备方法和应用 |
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