CN107899603A - 一种气凝胶型甲醇制对二甲苯催化剂的制备方法 - Google Patents
一种气凝胶型甲醇制对二甲苯催化剂的制备方法 Download PDFInfo
- Publication number
- CN107899603A CN107899603A CN201711129499.6A CN201711129499A CN107899603A CN 107899603 A CN107899603 A CN 107899603A CN 201711129499 A CN201711129499 A CN 201711129499A CN 107899603 A CN107899603 A CN 107899603A
- Authority
- CN
- China
- Prior art keywords
- sba
- parts
- preparation
- microemulsion
- speed stirred
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Natural products OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000003054 catalyst Substances 0.000 title claims abstract description 30
- URLKBWYHVLBVBO-UHFFFAOYSA-N p-dimethylbenzene Natural products CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000004964 aerogel Substances 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims description 26
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000004530 micro-emulsion Substances 0.000 claims abstract description 25
- -1 methylhydroxy Chemical group 0.000 claims abstract description 21
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 16
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 16
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 16
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 13
- 229920002545 silicone oil Polymers 0.000 claims abstract description 12
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 23
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 17
- 229920001971 elastomer Polymers 0.000 claims description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 13
- 239000002086 nanomaterial Substances 0.000 claims description 12
- 230000032683 aging Effects 0.000 claims description 9
- 229960004643 cupric oxide Drugs 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical class CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 7
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical class [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 7
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 235000014413 iron hydroxide Nutrition 0.000 claims description 7
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical class [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000005751 Copper oxide Substances 0.000 claims description 5
- 229910000431 copper oxide Inorganic materials 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical class [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical class [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 235000012254 magnesium hydroxide Nutrition 0.000 claims description 3
- 239000002114 nanocomposite Substances 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000000194 supercritical-fluid extraction Methods 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims 1
- 235000010215 titanium dioxide Nutrition 0.000 claims 1
- 238000005804 alkylation reaction Methods 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000029936 alkylation Effects 0.000 abstract description 2
- 238000006317 isomerization reaction Methods 0.000 abstract description 2
- 239000002243 precursor Substances 0.000 abstract description 2
- XYRAEZLPSATLHH-UHFFFAOYSA-N trisodium methoxy(trioxido)silane Chemical compound [Na+].[Na+].[Na+].CO[Si]([O-])([O-])[O-] XYRAEZLPSATLHH-UHFFFAOYSA-N 0.000 abstract description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 18
- 235000019441 ethanol Nutrition 0.000 description 16
- 239000003513 alkali Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- 229910019142 PO4 Inorganic materials 0.000 description 8
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 8
- 235000021317 phosphate Nutrition 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 7
- 239000010452 phosphate Substances 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000002808 molecular sieve Substances 0.000 description 6
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 6
- 239000004408 titanium dioxide Substances 0.000 description 6
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 description 5
- 239000002585 base Substances 0.000 description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- CMMAWNUCMAKQGU-UHFFFAOYSA-N hydroxy(methyl)silicon Chemical compound C[Si]O CMMAWNUCMAKQGU-UHFFFAOYSA-N 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 206010013786 Dry skin Diseases 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229960000583 acetic acid Drugs 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- CKLJMWTZIZZHCS-REOHCLBHSA-L aspartate group Chemical group N[C@@H](CC(=O)[O-])C(=O)[O-] CKLJMWTZIZZHCS-REOHCLBHSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 125000005909 ethyl alcohol group Chemical group 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000012362 glacial acetic acid Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 239000007783 nanoporous material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 150000003738 xylenes Chemical class 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000004064 cosurfactant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005120 petroleum cracking Methods 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000010555 transalkylation reaction Methods 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/03—Catalysts comprising molecular sieves not having base-exchange properties
- B01J29/0308—Mesoporous materials not having base exchange properties, e.g. Si-MCM-41
- B01J29/0316—Mesoporous materials not having base exchange properties, e.g. Si-MCM-41 containing iron group metals, noble metals or copper
- B01J29/0333—Iron group metals or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/89—Silicates, aluminosilicates or borosilicates of titanium, zirconium or hafnium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
- B01J35/23—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
- C07C2/86—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon
- C07C2/862—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon the non-hydrocarbon contains only oxygen as hetero-atoms
- C07C2/864—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon the non-hydrocarbon contains only oxygen as hetero-atoms the non-hydrocarbon is an alcohol
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2529/00—Catalysts comprising molecular sieves
- C07C2529/03—Catalysts comprising molecular sieves not having base-exchange properties
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2529/00—Catalysts comprising molecular sieves
- C07C2529/89—Silicates, aluminosilicates or borosilicates of titanium, zirconium or hafnium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Catalysts (AREA)
Abstract
本发明公开了一种气凝胶型甲醇制对二甲苯催化剂方法,水玻璃、甲基硅酸钠、十二烷基硫酸钠、丙酮、异丙醇、正己烷、聚甲基三乙氧基硅烷和甲基羟基硅油为主要原料,采用了以微乳液为前体、低成本、快速制备疏水气凝胶催化剂及其复合材料;本发明通过甲醇烷基化反应,得到对二甲苯,省去传统工艺中异构化等步骤,工艺路线缩短,对二甲苯单程收率大幅提高。
Description
技术领域
本发明涉及一种气凝胶型甲醇制对二甲苯催化剂及其制备方法,属于催化剂技术领域。
背景技术
对二甲苯是极为重要的大宗化工原料,主要用于生产对苯二甲酸和对苯二甲酸二甲醋。由于我国聚酯行业发展迅猛,带动了和消费量的增长,从而导致对二甲苯的消费量也快速增长。工业上一般是通过石油裂解产物进行芳烃分离、甲苯歧化或重芳烃烷基转移的方法生产对二甲苯,由于这些方法副产大量的苯,而苯的经济价值低,在一定程度上影响对二甲苯制备工艺的经济性。传统方法多采用固定床技术,床层温度不均匀,催化剂稳定性差、容易失活且不易再生为了提高催化剂稳定性,在反应过程中多需通入氢气作为载气,而氢气本身具有较高的价值,因此成本较高上;催化剂的制备和改性步骤繁琐,成本昂贵上述技术中苯的转化率多在30%一40%之间,原料利用率不够高。
发明内容
本发明的目的在于提供一种气凝胶型甲醇制对二甲苯催化剂的制备方法,对二甲苯在二甲苯异构体中的选择性大幅度提高,省去了传统工艺中异构化等步骤,工艺路线缩短,对二甲苯单程收率大幅提高。
一种气凝胶型甲醇制对二甲苯催化剂的制备方法,该方法包括以下步骤:
步骤1、量取300ml水玻璃,200ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,36g十二烷基硫酸钠,20g丙酮,10g异丙醇,300g正己烷,200g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;
步骤2、向上述微乳液中加入少量的硫酸水溶液,调节PH=7,然后加入15g二氧化钛,12g氢氧化铝,12g氢氧化镁,12g氢氧化铁,高速搅拌10min;
步骤3、取500gCu-SBA-15纳米材料置于准备好的模具内,然后将配置好的微乳液均匀的倒入模具,直至Cu-SBA-15纳米材料浸满液体,盖上模具盖板,防止挥发。静置40分钟后,形成无机添加剂一纤维复合的凝胶材料;
步骤4、将凝胶材料置于60℃乙醇中老化5h,乙醇体积为凝胶材料体积的5倍;老化完成后,将凝胶材料放入二氧化碳超临界萃取釜内,设置压力12Mpa,温度50℃,干燥6h后,保温降压,最终得到疏水的、增强型的纤维复合Cu-SBA-15气凝胶催化剂。
所述的Cu-SBA-15纳米材料制备方法如下:
步骤1、将15份氧化铜放入质量分数8%的氯化铝溶液中90℃下搅拌5小时,过滤,洗涤至中性,烘干,分散在乙醇一去离子水溶液中,加入18份十八烷基胺在60℃水浴中搅拌4小时,超声分散30分钟,抽滤,洗涤,真空干燥至恒重,即得活性氧化铜;
步骤2、将5份活性氧化铜和15份SBA-15沸石材料干燥后,进行研磨粉碎,600目过筛,90℃下混合搅拌均匀,分散在乙醇一去离子水溶液中,加入14份十六烷基三甲基溴化铵在60℃水浴中搅拌4小时,超声分散30分钟,抽滤,洗涤,真空干燥至恒重,研磨,过筛即得Cu-SBA-15纳米复合材料。
有益效果:本发明提供了一种以微乳液为前体、低成本、快速制备疏水气凝胶催化剂及其复合材料的方法,微乳液是两种互不相溶液体在表面活性剂及助表面活性剂作用下自发形成的均一透明、热力学稳定的分散体系,两种互不相溶的连续介质被表面活性剂双亲分子分割成微小空间形成微型反应器,其大小可控制在纳米级范围,反应物在体系中反应生成固相粒子;由于微乳液能对纳米材料的粒径和稳定性进行精确控制,限制了纳米粒子的成核、生长、聚结、团聚等过程,从而形成的纳米粒子包裹有一层表面活性剂,并有一定的凝聚态结构,提高甲醇烷基化反应效果;使得对二甲苯在二甲苯异构体中的选择性大幅度提高,而且制备工艺新颖,原料成本低,适用范围广,既可用常压干燥方法,也可用超临界干燥工艺,得到的催化剂对甲醇烷基化反应具有优良的催化性能,结构强度高,使用寿命长。
具体实施方式
实施例1
一种气凝胶型甲醇制对二甲苯催化剂的制备方法,该方法包括以下步骤:
步骤1、量取300ml水玻璃,200ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,36g十二烷基硫酸钠,20g丙酮,10g异丙醇,300g正己烷,200g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;
步骤2、向上述微乳液中加入少量的硫酸水溶液,调节PH=7,然后加入15g二氧化钛,12g氢氧化铝,12g氢氧化镁,12g氢氧化铁,高速搅拌10min;
步骤3、取500gCu-SBA-15纳米材料置于准备好的模具内,然后将配置好的微乳液均匀的倒入模具,直至Cu-SBA-15纳米材料浸满液体,盖上模具盖板,防止挥发。静置40分钟后,形成无机添加剂一纤维复合的凝胶材料;
步骤4、将凝胶材料置于60℃乙醇中老化5h,乙醇体积为凝胶材料体积的5倍;老化完成后,将凝胶材料放入二氧化碳超临界萃取釜内,设置压力12Mpa,温度50℃,干燥6h后,保温降压,最终得到疏水的、增强型的纤维复合Cu-SBA-15气凝胶催化剂。
所述的Cu-SBA-15纳米材料制备方法如下:
步骤1、将15份氧化铜放入质量分数8%的氯化铝溶液中90℃下搅拌5小时,过滤,洗涤至中性,烘干,分散在乙醇一去离子水溶液中,加入18份十八烷基胺在60℃水浴中搅拌4小时,超声分散30分钟,抽滤,洗涤,真空干燥至恒重,即得活性氧化铜;
步骤2、将5份活性氧化铜和15份SBA-15沸石材料干燥后,进行研磨粉碎,600目过筛,90℃下混合搅拌均匀,分散在乙醇一去离子水溶液中,加入14份十六烷基三甲基溴化铵在60℃水浴中搅拌4小时,超声分散30分钟,抽滤,洗涤,真空干燥至恒重,研磨,过筛即得Cu-SBA-15纳米复合材料。
实施例2
步骤1、量取300ml水玻璃,100ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,18g十二烷基硫酸钠,20g丙酮,10g异丙醇,300g正己烷,200g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;其余步骤同实施例1。
实施例3
步骤1、量取200ml水玻璃,100ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,8g十二烷基硫酸钠,10g丙酮,10g异丙醇,300g正己烷,200g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;其余步骤同实施例1。
实施例4
步骤1、量取150ml水玻璃,100ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,36g十二烷基硫酸钠,20g丙酮,10g异丙醇,300g正己烷,200g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;其余步骤同实施例1。
实施例5
步骤1、量取300ml水玻璃,200ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,36g十二烷基硫酸钠,10g丙酮,5g异丙醇,150g正己烷,100g聚甲基三乙氧基硅烷,25g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;其余步骤同实施例1。
实施例6
步骤1、量取150ml水玻璃,50ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,36g十二烷基硫酸钠,10g丙酮,5g异丙醇,150g正己烷,50g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;其余步骤同实施例1。
实施例7
步骤1、量取300ml水玻璃,50ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,36g十二烷基硫酸钠,50g丙酮,60g异丙醇,30g正己烷,300g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;其余步骤同实施例1。
实施例8
步骤1、量取60ml水玻璃,150ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,16g十二烷基硫酸钠,2g丙酮,20g异丙醇,300g正己烷,200g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;其余步骤同实施例1。
实施例9
步骤1、量取130ml水玻璃,180ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,36g十二烷基硫酸钠,20g丙酮,10g异丙醇,30g正己烷,200g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;其余步骤同实施例1。
实施例10
步骤1、量取300ml水玻璃,200ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,36g十二烷基硫酸钠,20g丙酮,10g异丙醇,100g正己烷,300g聚甲基三乙氧基硅烷,20g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;其余步骤同实施例1。
实施例11
步骤1、量取300ml水玻璃,200ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,72g纳米钛硅分子筛TS-1-碱磷酸盐,36g十二烷基硫酸钠,20g丙酮,10g异丙醇,300g正己烷,200g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;
其余步骤同实施例1。
所述的纳米钛硅分子筛TS-1-碱磷酸盐制备方法如下
步骤1、将2份聚天冬氨酸、5份氢氧化钾混合研磨5min后投入到3份邻羟基苯甲醛和30份无水乙醇混合液中,在60℃水浴条件下搅拌反应40min,反应结束后混合溶液抽滤,滤液经重结晶,得碱配合物,将其真空干燥后备用;
步骤2、将2份聚乙烯吡咯烷酮、10份无水乙醇投入反应容器中,开启搅拌装置,转速控制为
500转/分钟,随后加入1.8份钛硅分子筛TS-1,搅拌分散2h后加入14份步骤1制备的碱配合物,继续处理30min后加入10份去离子水,混合30min后停止搅拌,再用冰醋酸调节体系PH为3.5,即得纳米钛硅分子筛TS-1-碱磷酸盐。
对照例1
与实施例1不同点在于:催化剂制备的步骤2中,加入10g二氧化钛,6g氢氧化铝,12g氢氧化镁,12g氢氧化铁,其余步骤与实施例1完全相同。
对照例2
与实施例1不同点在于:催化剂制备的步骤2中,加入5g二氧化钛,6g氢氧化铝,6g氢氧化镁,6g氢氧化铁,其余步骤与实施例1完全相同。
对照例3
与实施例1不同点在于:催化剂制备的步骤2中,加入15g二氧化钛,6g氢氧化铝,6g氢氧化镁,6g氢氧化铁,其余步骤与实施例1完全相同。
对照例4
与实施例1不同点在于:催化剂制备的步骤2中,加入5g二氧化钛,15g氢氧化铝,2g氢氧化镁,1g氢氧化铁,其余步骤与实施例1完全相同。
对照例5
与实施例1不同点在于:催化剂制备的步骤4中,将凝胶材料置于60℃乙醇中老化5h,乙醇体积为凝胶材料体积的2倍,其余步骤与实施例1完全相同。
对照例6
与实施例1不同点在于:催化剂制备的步骤4中,将凝胶材料置于60℃乙醇中老化5h,乙醇体积为凝胶材料体积的10倍,其余步骤与实施例1完全相同。
对照例7
与实施例1不同点在于: Cu-SBA-15纳米材料制备步骤1中,加入32份十八烷基胺,其余步骤与实施例1完全相同。
对照例8
与实施例1不同点在于:Cu-SBA-15纳米材料制备步骤1中,加入6份十八烷基胺,其余步骤与实施例1完全相同。
对照例9
与实施例1不同点在于:Cu-SBA-15纳米多孔材料制备步骤2中,将1份活性氧化铜和15份SBA-15沸石材料干燥,其余步骤与实施例1完全相同。
对照例10
与实施例1不同点在于:Cu-SBA-15纳米多孔材料制备步骤2中,将10份活性氧化铜和15份SBA-15沸石材料干燥,其余步骤与实施例1完全相同。
对照例11
步骤1、量取300ml水玻璃,200ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,72g碱磷酸盐,36g十二烷基硫酸钠,20g丙酮,10g异丙醇,300g正己烷,200g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;其余步骤同实施例1。
碱磷酸盐制备方法如下
步骤1、将2份聚天冬氨酸、5份氢氧化钾混合研磨5min后投入到3份邻羟基苯甲醛和30份无水乙醇混合液中,在60℃水浴条件下搅拌反应40min,反应结束后混合溶液抽滤,滤液经重结晶,得碱配合物,将其真空干燥后备用;
步骤2、将2份聚乙烯吡咯烷酮、10份无水乙醇投入反应容器中,开启搅拌装置,转速控制为
500转/分钟,搅拌分散2h后加入14份步骤1制备的碱配合物,继续处理30min后加入10份去离子水,混合30min后停止搅拌,再用冰醋酸调节体系PH为3.5,即得碱磷酸盐。
苯和甲醇烷基化反应在流化床反应装置上进行。反应条件为:催化剂装填100g,反应温度为500℃,原料苯和甲醇摩尔比为1:2,原料重时空速为2.8h-1,反应压力为0.1MPa,反应产物用在线气相色谱进行分析,结果如表所示。
实验结果表明催化剂对甲醇烷基化具有良好的催化效果,在反应条件一定时,对二甲苯选择性越高,催化性能越好,反之越差;在水玻璃、甲基硅酸钠体积比为3:2时,其他配料固定,催化效果最好,与实施例1不同点在于,实施例2至实施例10分别改变催化剂微乳液前体的主要原料的用量和配比,对催化剂的催化性能有不同的影响,值得注意的是实施例11加入了纳米钛硅分子筛TS-1-碱磷酸盐,对二甲苯选择性明显提高,说明纳米钛硅分子筛TS-1-碱磷酸盐对催化材料的结构活性有更好的优化作用;对照例1至对照例 4改变了金属氧化物的配比和负载量,其他步骤完全相同,导致催化剂的活性发生变化,对二甲苯选择性明显降低;对照例5至对照例6,改变老化过程中乙醇的体积比,效果依然不好,说明乙醇的体积用量很重要;对照例7至对照例8改变十八烷基胺的用量,对二甲苯选择性也不高,说明十八烷基胺的多少对氧化铜的活化影响很大;对照例9和对照例10,改变活性氧化铜和SBA-15的质量配比,导致多孔材料的结构活性发生变化,效果明显变差;因此使用本发明制备的催化剂对甲醇烷基化反应具有优异的催化效果。
Claims (2)
1.一种气凝胶型甲醇制对二甲苯催化剂的制备方法,其特征在于,该方法包括以下步骤:
步骤1、量取300ml水玻璃,200ml甲基硅酸钠,高速搅拌的同时,依次加入600ml水,36g十二烷基硫酸钠,20g丙酮,10g异丙醇,300g正己烷,200g聚甲基三乙氧基硅烷,50g甲基羟基硅油,高速搅拌直至得到半透明均匀的微乳液;
步骤2、向上述微乳液中加入少量的硫酸水溶液,调节PH=7左右,然后加入15g二氧化钛,12g氢氧化铝,12g氢氧化镁,12g氢氧化铁,高速搅拌10min;
步骤3、取500gCu-SBA-15纳米材料置于准备好的模具内,然后将配置好的微乳液均匀的倒入模具,直至Cu-SBA-15纳米材料浸满液体,盖上模具盖板,防止挥发;
静置40分钟后,形成无机添加剂一纤维复合的凝胶材料;
步骤4、将凝胶材料置于60℃乙醇中老化5h,乙醇体积为凝胶材料体积的5倍;老化完成后,将凝胶材料放入二氧化碳超临界萃取釜内,设置压力12Mpa,温度50℃,干燥6h后,保温降压,最终得到疏水的、增强型的纤维复合Cu-SBA-15气凝胶催化剂。
2.根据权利要求1所述一种气凝胶型甲醇制对二甲苯催化剂的制备方法,其特征在于,
所述的Cu-SBA-15纳米材料制备方法如下:
步骤1、将15份氧化铜放入质量分数8%的氯化铝溶液中90℃下搅拌5小时,过滤,洗涤至中性,烘干,分散在乙醇一去离子水溶液中,加入18份十八烷基胺在60℃水浴中搅拌4小时,超声分散30分钟,抽滤,洗涤,真空干燥至恒重,即得活性氧化铜;
步骤2、将5份活性氧化铜和15份SBA-15沸石材料干燥后,进行研磨粉碎,600目过筛,90℃下混合搅拌均匀,分散在乙醇一去离子水溶液中,加入14份十六烷基三甲基溴化铵在60℃水浴中搅拌4小时,超声分散30分钟,抽滤,洗涤,真空干燥至恒重,研磨,过筛即得Cu-SBA-15纳米复合材料。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711129499.6A CN107899603A (zh) | 2017-11-15 | 2017-11-15 | 一种气凝胶型甲醇制对二甲苯催化剂的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711129499.6A CN107899603A (zh) | 2017-11-15 | 2017-11-15 | 一种气凝胶型甲醇制对二甲苯催化剂的制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN107899603A true CN107899603A (zh) | 2018-04-13 |
Family
ID=61845532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711129499.6A Pending CN107899603A (zh) | 2017-11-15 | 2017-11-15 | 一种气凝胶型甲醇制对二甲苯催化剂的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107899603A (zh) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101380596A (zh) * | 2008-02-03 | 2009-03-11 | 大连理工大学 | 无机盐为前驱物制备纳米复合材料的超临界流体沉积方法 |
CN101671226A (zh) * | 2009-09-28 | 2010-03-17 | 清华大学 | 一种甲醇芳构化制取二甲苯工艺 |
CN102267862A (zh) * | 2011-06-10 | 2011-12-07 | 湖南大学 | 一种以天然气甲烷为原料催化制备对二甲苯的耦合方法 |
CN103772097A (zh) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | 烷基化产物处理方法 |
CN104128198A (zh) * | 2014-07-18 | 2014-11-05 | 陕西煤化工技术工程中心有限公司 | 甲苯甲醇烷基化制对二甲苯联产乙烯的催化剂及其应用 |
CN104788280A (zh) * | 2015-04-21 | 2015-07-22 | 东南大学 | 一种甘油芳构化制备轻质芳烃的方法 |
CN105126897A (zh) * | 2015-07-29 | 2015-12-09 | 中国科学院山西煤炭化学研究所 | 一种sba-15分子筛负载铜基催化剂及制备方法和应用 |
CN105214714A (zh) * | 2015-10-30 | 2016-01-06 | 陕西煤化工技术工程中心有限公司 | 一种苯和甲醇烷基化制取对二甲苯催化剂及其制备方法 |
CN105772061A (zh) * | 2014-12-26 | 2016-07-20 | 中国科学院大连化学物理研究所 | 甲苯与甲醇或/和二甲醚烷基化反应催化剂及其制备方法 |
CN106185959A (zh) * | 2016-09-14 | 2016-12-07 | 纳诺科技有限公司 | 一种以微乳液为前体快速制备气凝胶的方法 |
-
2017
- 2017-11-15 CN CN201711129499.6A patent/CN107899603A/zh active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101380596A (zh) * | 2008-02-03 | 2009-03-11 | 大连理工大学 | 无机盐为前驱物制备纳米复合材料的超临界流体沉积方法 |
CN101671226A (zh) * | 2009-09-28 | 2010-03-17 | 清华大学 | 一种甲醇芳构化制取二甲苯工艺 |
CN102267862A (zh) * | 2011-06-10 | 2011-12-07 | 湖南大学 | 一种以天然气甲烷为原料催化制备对二甲苯的耦合方法 |
CN103772097A (zh) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | 烷基化产物处理方法 |
CN104128198A (zh) * | 2014-07-18 | 2014-11-05 | 陕西煤化工技术工程中心有限公司 | 甲苯甲醇烷基化制对二甲苯联产乙烯的催化剂及其应用 |
CN105772061A (zh) * | 2014-12-26 | 2016-07-20 | 中国科学院大连化学物理研究所 | 甲苯与甲醇或/和二甲醚烷基化反应催化剂及其制备方法 |
CN104788280A (zh) * | 2015-04-21 | 2015-07-22 | 东南大学 | 一种甘油芳构化制备轻质芳烃的方法 |
CN105126897A (zh) * | 2015-07-29 | 2015-12-09 | 中国科学院山西煤炭化学研究所 | 一种sba-15分子筛负载铜基催化剂及制备方法和应用 |
CN105214714A (zh) * | 2015-10-30 | 2016-01-06 | 陕西煤化工技术工程中心有限公司 | 一种苯和甲醇烷基化制取对二甲苯催化剂及其制备方法 |
CN106185959A (zh) * | 2016-09-14 | 2016-12-07 | 纳诺科技有限公司 | 一种以微乳液为前体快速制备气凝胶的方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105268472B (zh) | 壳层取向外延共生的ZSM‑5/silicalite‑1核壳分子筛 | |
JPH101309A (ja) | 球状のシリカ/ゼオライト複合材およびその製造方法 | |
CN102895994B (zh) | Ti-SBA-15分子筛及改性Ti-SBA-15分子筛及其和环氧丙烷的制备方法 | |
CN111646492B (zh) | 一种γ-氧化铝纳米纤维及其制备方法 | |
CN104556094A (zh) | 一种Y/Silicalite-1复合分子筛及其制备方法 | |
Yusoff et al. | Catalytic behavior of sulfated zirconia supported on SBA-15 as catalyst in selective glycerol esterification with palmitic acid to monopalmitin | |
CN104069887A (zh) | 一种制备硅改性的zsm-5分子筛催化剂的方法,由该方法制得的催化剂及其应用 | |
CN108002396B (zh) | 一种以TPABr为模板剂合成Silicalite-1分子筛的方法 | |
Unnarkat et al. | Study of cobalt molybdenum oxide supported on mesoporous silica for liquid phase cyclohexane oxidation | |
Sachse et al. | Improved silica–titania catalysts by chitin biotemplating | |
Li et al. | Exploring suitable ZSM-5/MCM-41 zeolites for catalytic cracking of n-dodecane: Effect of initial particle size and Si/Al ratio | |
CN105645427B (zh) | 具有介孔‑微孔分等级结构的zsm‑22分子筛的制备方法 | |
JP4090855B2 (ja) | Mfi型ゼオライト系触媒の製造方法 | |
CN107512726A (zh) | 无粘结剂Beta分子筛的制备方法 | |
CN107519933A (zh) | Y/eu‑1/sba‑15/asa/mof复合材料及其制备方法 | |
CN101823728A (zh) | 一种小晶粒sapo-34分子筛的制备方法 | |
CN102794193B (zh) | 一种微孔分子筛外表面修饰的方法 | |
Miao et al. | Effect of Triton X-100 additive on the synthesis of Beta zeolites and their catalytic application in acylation of anisole with acetic anhydride | |
CN107913691A (zh) | 含大孔的氧化铝载体及其制备方法 | |
CN101870478A (zh) | 一种纳米y型分子筛的合成方法 | |
CN103848437A (zh) | 一种zsm-5分子筛的制备方法 | |
CN107899603A (zh) | 一种气凝胶型甲醇制对二甲苯催化剂的制备方法 | |
CA1311737C (en) | Process of making uniform size porous silica spheres | |
CN105080590B (zh) | 一种含有小晶粒y型分子筛的催化剂的制备方法 | |
CN107188186A (zh) | 一种合成高度有序超微孔二氧化硅的方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180413 |
|
WD01 | Invention patent application deemed withdrawn after publication |