CN106111155A - 一种用于3‑羟基丙酸甲酯加氢制备1,3‑丙二醇的催化剂及其制备方法 - Google Patents
一种用于3‑羟基丙酸甲酯加氢制备1,3‑丙二醇的催化剂及其制备方法 Download PDFInfo
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- CN106111155A CN106111155A CN201610469214.2A CN201610469214A CN106111155A CN 106111155 A CN106111155 A CN 106111155A CN 201610469214 A CN201610469214 A CN 201610469214A CN 106111155 A CN106111155 A CN 106111155A
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- methyl propionate
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- 239000003054 catalyst Substances 0.000 title claims abstract description 55
- 229940017219 methyl propionate Drugs 0.000 title claims abstract description 37
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 28
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 title abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 10
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 8
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 8
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 8
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Natural products OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 239000001257 hydrogen Substances 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 239000002244 precipitate Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical group [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000004254 Ammonium phosphate Substances 0.000 claims description 3
- 239000012670 alkaline solution Substances 0.000 claims description 3
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 3
- 239000011609 ammonium molybdate Substances 0.000 claims description 3
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 3
- 229940010552 ammonium molybdate Drugs 0.000 claims description 3
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 3
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 3
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 3
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 claims description 3
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 claims description 3
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 3
- 230000002572 peristaltic effect Effects 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 238000000975 co-precipitation Methods 0.000 claims description 2
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002243 precursor Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 abstract 6
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 7
- 238000002242 deionisation method Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- -1 poly terephthalic acid propylene glycol Ester Chemical class 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical group [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910017752 Cu-Zn Inorganic materials 0.000 description 1
- 229910017813 Cu—Cr Inorganic materials 0.000 description 1
- 229910017943 Cu—Zn Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910000564 Raney nickel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- PWGQHOJABIQOOS-UHFFFAOYSA-N copper;dioxido(dioxo)chromium Chemical compound [Cu+2].[O-][Cr]([O-])(=O)=O PWGQHOJABIQOOS-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/80—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with zinc, cadmium or mercury
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- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/83—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
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- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/85—Chromium, molybdenum or tungsten
- B01J23/88—Molybdenum
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- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
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- C07C29/147—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof
- C07C29/149—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof with hydrogen or hydrogen-containing gases
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Abstract
本发明涉及加氢催化剂领域,特别涉及一种用于3‑羟基丙酸甲酯加氢制备1,3‑丙二醇的催化剂及其制备方法。该用于3‑羟基丙酸甲酯加氢制备1,3‑丙二醇的催化剂,其特征在于:以SiO2为载体,采用Cu基催化剂,并加入Zn、Zr、Mn、La、P、Mo、Ni元素中的一种或几种作为助剂,各元素氧化物质量组成为CuO:45~75%,SiO2:15~45%,助剂:0.1~25%;本发明所得催化剂粒度小,活性组分分散度高,比表面积大,用于3‑羟基丙酸甲酯加氢制备1,3‑丙二醇活性及选择性高,重复性好。
Description
技术领域
本发明涉及加氢催化剂领域,特别涉及一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂及其制备方法。
背景技术
1,3-丙二醇(1,3-PDO)是一种重要的化工原料。可用作生产抗冻剂、洗涤剂、防腐剂等,是众多聚合物的基础原料,目前发展起来的最重要应用是合成聚对苯二甲酸丙二醇酯(PTT)。与PET(聚对苯二甲酸乙二酯)、PBT(聚对苯二甲酸丁二酯)相比,PTT既具有耐光性、吸水少、稳定性好等优良性能,同时又具有回弹性好,易生物降解和对环境污染小等优点,在纤维和塑料领域被广泛应用,是目前研究和开发的焦点。
目前比较好的羰基加氢催化剂有三种类型:铜系催化剂、镍系催化剂和贵金属催化剂。三种不同的催化剂比较而言,以雷尼镍为代表的镍系催化剂存在制备复杂,反应工艺复杂,催化剂活性低等特点。而贵金属催化剂在制备过程中,原料成本较高。铜系催化剂中,在工业上最常用的是铜铬催化剂、铜锌铬催化剂和铜锌催化剂。三星电子株式会社在专利US6348632中公开了有关环氧化物制备1,3-丙二醇的方法,采用铬酸铜催化剂,180℃下反应15小时,3-羟基丙酸甲酯转化率仅5%,1,3-丙二醇选择性仅3%,不仅催化效果不好,而且存在铬的污染问题在催化剂制备,反应工艺及后处理过程均须特别注意。Shell公司在US6191321B1中公开了一 种3-羟基丙酸甲酯制备1,3-丙二醇的方法,采用Cu-Zn催化剂,原料以低流速通过反应器,降低了加氢反应的温度。另外,广东石油化工学院在专利CN102059125A中公开了一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂的合成方法,该催化剂活性组分是Cu、Mn和Zr的氧化物。复旦大学在专利CN100503039C中公开了一种3-羟基丙酸甲酯加氢制备1,3-丙二醇用的纳米铜基催化剂及其制备方法,该催化剂由是Cu、Si和Al的氧化物按一定重量百分百组成,在醇溶液存在的条件下采用溶胶凝胶法制备而成。中国科学院兰州化学物理研究所在专利CN101195558A中公开了一种由3-羟基丙酸甲酯制备1,3-丙二醇的方法,该方法催化剂采用CuO-SiO2。以上虽报道了有关3-羟基丙酸甲酯制备1,3-丙二醇的方法,但均未涉及制备过程中加料顺序及加料方式,也未明确说明加氢条件。
发明内容
本发明为了弥补现有技术的缺陷,提供了一种生产工艺简单,重复性高的用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂及其制备方法。
本发明是通过如下技术方案实现的:
一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂,其特征在于:以SiO2为载体,采用Cu基催化剂,并加入Zn、Zr、Mn、La、P、Mo、Ni元素中的一种或几种作为助剂,各元素氧化物质量组成为CuO :45~75%, SiO2:15~45%,助剂:0.1~25%。
本发明的用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂的制备方法,具体包括如下步骤:
(1)按上述比例将Cu及助剂的前驱体溶于去离子水中;
(2)将碱性沉淀剂溶于去离子水中制得碱性溶液;
(3)将步骤(1)和步骤(2)配置好的溶液在30~90℃,搅拌条件下以一定速率共沉淀;
(4)向步骤(3)所得沉淀物中通入硅溶胶,并调节pH 7.0~13.0;
(5)将步骤(4)所得沉淀物在40~100℃下陈化1~10小时;
(6)将步骤(5)所得沉淀物过滤并洗涤2~6次;
(7)将步骤(5)所得沉淀物在60~140℃下干燥4~40小时;
(8)将步骤(7)所得固体在300~850℃下焙烧4~24小时,
(9)压片,破碎、过筛得所述催化剂。
进一步的,步骤(1)所述Cu的前躯体优选为硝酸铜,所述助剂的前驱体为硝酸锌、硝酸锆、硝酸锰、硝酸镧、磷酸铵、钼酸铵、硝酸镍的一种或几种。
步骤(2)所述的沉淀剂为氢氧化钠、碳酸钠、碳酸氢钠的一种,所得碱性溶液的浓度为0.3~1.3mol/L。
步骤(3)所述搅拌速度为200~1000rpm;所述共沉淀过程通过蠕动泵进行,进料速率为0.8~8ml/min。
步骤(7)所述干燥为真空干燥。
步骤(8)所述焙烧的气氛为空气。
步骤(9)过筛选用催化剂为20~60目。
本发明所述催化剂用于3-羟基丙酸甲酯加氢制备1,3-丙二醇工艺中,使用前催化剂用氢气体积浓度5~20vol.% 的氢氮混合气体进行还原,还原温度为200~450℃,还原压力0.01~8.0 MPa,还原时间为1~48小时;反应时3-羟基丙酸甲酯用甲醇稀释,3-羟基丙酸甲酯的质量浓度为5~20%,反应温度为140~200℃,反应压力为6~8MPa,反应时间为4~20小时。
本发明的有益效果是:本发明提供了一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂及其制备方法,以SiO2为载体,采用Cu基催化剂,并加入Zn、Zr、Mn、La、P、Mo、Ni元素中的一种或几种作为助剂,在剧烈搅拌条件下和碱性沉淀剂通过蠕动泵以特定速率共沉淀,然后加入硅溶胶。相对其它3-羟基丙酸甲酯加氢制1,3-丙二醇的催化剂制备方法,该催化剂可达纳米级粒度,通过控制沉淀速率,使沉淀形成更均匀,从而提高了催化活性,助剂的加入使催化剂各组分的相互作用增强,有效地促进活性组分的分散,比表面积大,防止催化剂的烧结,利于稳定催化剂的活性中心,大大提高了3-羟基丙酸甲酯加氢制备1,3-丙二醇反应的活性及选择性,重复性好。
具体实施方式
下面通过具体实施方案对本发明作进一步详细描述,但这些实施实例仅在于举例说明,并不对本发明的范围进行限定。
实施例1:
将39.48g硝酸铜,4.12g硝酸锰,溶解于400mL去离子中,和0.7mol/L氢氧化钠溶液465ml在45℃、200rpm搅拌下以0.8ml/min共沉淀,然后加入20g硅溶胶,待沉淀物pH为12.0后,于66℃陈化1h,洗涤三次后,100℃真空干燥24小时,500℃焙烧4小时,筛分成20~40目填装,在450℃,8.0MPa下,用氢气体积浓度20vol.% 氢氮混合气体还原1h后,通入质量浓度为5%的3-羟基丙酸甲酯的甲醇溶液,于200℃,6.0MPa,下反应4小时,取出反应后液体采用GC-7890A气相色谱仪分析测定,评价结果见表1。
实施例2:
将27.34g硝酸铜,3.72g硝酸镧,2.34g硝酸镍,溶解于400mL去离子中,和0.3mol/L氢氧化钠溶液400ml在30℃、600rpm搅拌下以6ml/min共沉淀,然后加入30g硅溶胶,待沉淀物pH为7.0后,于40℃陈化6h,洗涤三次后,60℃真空干燥40小时,850℃焙烧4小时,筛分成20~40目填装,在200℃,6.0MPa下,用氢气体积浓度5vol.% 氢氮混合气体还原20h后,通入质量浓度为20%的3-羟基丙酸甲酯的甲醇溶液,于160℃,8.0MPa,下反应20小时,取出反应后液体采用GC-7890A气相色谱仪分析测定,评价结果见表1。
实施例3:
将33.41g硝酸铜,2.19g硝酸锌,1.47g钼酸铵,0.60g磷酸铵,溶解于400mL去离子中,和1.3mol/L氢氧化钠溶液480ml在60℃、800rpm搅拌下以8ml/min共沉淀,然后加入23.33g硅溶胶,待沉淀物pH为13.0后,于100℃陈化10h,洗涤两次后,140℃真空干燥4小时,700℃焙烧18小时,筛分成20~40目填装,在400℃,0.01MPa下,用氢气体积浓度10vol.% 的氢氮混合气体还原48h后,通入质量浓度为10%的3-羟基丙酸甲酯的甲醇溶液,于140℃,8.0MPa,下反应15小时,取出反应后液体采用GC-7890A气相色谱仪分析测定,评价结果见表1。
实施例4:
将45.56g硝酸铜,0.70g硝酸锆,溶解于350mL去离子中,和0.8mol/L氢氧化钠溶液350ml在90℃、1000rpm搅拌下以0.8ml/min共沉淀,然后加入16g硅溶胶,待沉淀物pH为10.0后,于100℃陈化6h,洗涤六次后,80℃真空干燥30小时,300℃焙烧24小时,筛分成40~60目填装,在300℃,3.0MPa下,用氢气体积浓度15vol.% 氢氮混合气体还原10h后,通入质量浓度为7%的3-羟基丙酸甲酯的甲醇溶液,于170℃,6.0MPa,下反应6小时,取出反应后液体采用GC-7890A气相色谱仪分析测定,评价结果见表1。
实施例5
将36.45g硝酸铜,6.97g硝酸锆,1.462g硝酸锌溶解于350mL去离子中,和0.85mol/L氢氧化钠溶液380ml在55℃、800rpm搅拌下共沉淀,然后加入18.67g硅溶胶,待沉淀物pH为8.6后,于65℃老化5h,洗涤四次后,80℃真空干燥26小时,800℃焙烧7小时,筛分成40~60目填装,在300℃,0.5MPa下,用氢气体积浓度10vol.% 氢氮混合气体还原12h后,通入质量浓度为10%的3-羟基丙酸甲酯的甲醇溶液,于160℃,7.0MPa,下反应12小时,取出反应后液体采用GC-7890A气相色谱仪分析测定,评价结果见表1。
实施例6
将36.45g硝酸铜,10.46g硝酸锆,溶解于350mL去离子中,和1.0mol/L氢氧化钠溶液300ml在45℃、1000rpm搅拌下以3.5ml/min共沉淀,然后加入10g硅溶胶,待沉淀物pH为9.2后,于70℃陈化4h,洗涤五次后,80℃真空干燥24小时,750℃焙烧6小时,筛分成40~60目填装,在300℃,1.0MPa下,用氢气体积浓度15vol.% 氢氮混合气体还原6h后,通入质量浓度为10%的3-羟基丙酸甲酯的甲醇溶液,于170℃,6.8MPa,下反应5小时,取出反应后液体采用GC-7890A气相色谱仪分析测定,评价结果见表1。
表1 实施例1-6所述催化剂的评价结果
Claims (9)
1.一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂,其特征在于:其特征在于:以SiO2为载体,采用Cu基催化剂,并加入Zn、Zr、Mn、La、P、Mo、Ni元素中的一种或几种作为助剂,各元素氧化物质量组成为CuO :45~75%, SiO2:15~45%,助剂:0.1~25%。
2.根据权利要求1所述的一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂的制备方法,其特征在于:具体包括如下步骤:
(1)按上述比例将Cu及助剂的前驱体溶于去离子水中;
(2)将碱性沉淀剂溶于去离子水中制得碱性溶液;
(3)将步骤(1)和步骤(2)配置好的溶液在30~90℃,搅拌条件下以一定速率共沉淀;
(4)向步骤(3)所得沉淀物中通入硅溶胶,并调节pH 7.0~13.0;
(5)将步骤(4)所得沉淀物在40~100℃下陈化1~10小时;
(6)将步骤(5)所得沉淀物过滤并洗涤2~6次;
(7)将步骤(5)所得沉淀物在60~140℃下干燥4~40小时;
(8)将步骤(7)所得固体在300~850℃下焙烧4~24小时,
(9)压片,破碎、过筛得所述催化剂。
3.根据权利要求2所述的一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇催化剂的制备方法,其特征在于:步骤(1)所述Cu的前躯体优选为硝酸铜,所述助剂的前驱体为硝酸锌、硝酸锆、硝酸锰、硝酸镧、磷酸铵、钼酸铵、硝酸镍的一种或几种。
4.根据权利要求2所述的一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇催化剂的制备方法,其特征在于:步骤(2)所述的沉淀剂为氢氧化钠、碳酸钠、碳酸氢钠的一种,所得碱性溶液的浓度为0.3~1.3mol/L。
5.根据权利要求2所述的一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇催化剂的制备方法,其特征在于:步骤(3)所述搅拌速度为200~1000rpm;所述共沉淀过程通过蠕动泵进行,进料速率为0.8~8ml/min。
6.根据权利要求2所述的一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂的制备方法,其特征在于:步骤(7)所述干燥为真空干燥。
7.根据权利要求2所述的一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂的制备方法,其特征在于:步骤(8)所述焙烧的气氛为空气。
8.根据权利要求2所述的一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂的制备方法,其特征在于:步骤(9)过筛选用催化剂为20~60目。
9. 根据权利要求1所述的一种用于3-羟基丙酸甲酯加氢制备1,3-丙二醇的催化剂,其特征在于:所述催化剂用于3-羟基丙酸甲酯加氢制备1,3-丙二醇工艺中,使用前本催化剂用氢气体积浓度5~20vol.% 的氢氮混合气体进行还原,还原温度为200~450℃,还原压力0.01~8.0 MPa,还原时间为1~48小时;反应时3-羟基丙酸甲酯用甲醇稀释,3-羟基丙酸甲酯的质量浓度为5~20%,反应温度为140~200℃,反应压力为6~8MPa,反应时间为4~20小时。
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CN115155627A (zh) * | 2022-07-26 | 2022-10-11 | 中化泉州能源科技有限责任公司 | 3-羟基丙酸甲酯加氢制备1,3-丙二醇的多元复合型催化剂及其制备方法 |
CN115155627B (zh) * | 2022-07-26 | 2024-08-30 | 中化泉州能源科技有限责任公司 | 3-羟基丙酸甲酯加氢制备1,3-丙二醇的多元复合型催化剂及其制备方法 |
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