CN106268782A - 一种石油蜡加氢精制用负载型催化剂 - Google Patents
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- 239000003054 catalyst Substances 0.000 title claims abstract description 34
- 239000012169 petroleum derived wax Substances 0.000 title claims abstract description 9
- 235000019381 petroleum wax Nutrition 0.000 title claims abstract description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 28
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 24
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 12
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 239000000243 solution Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- 235000019270 ammonium chloride Nutrition 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- 239000012065 filter cake Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004040 coloring Methods 0.000 abstract description 4
- 239000001993 wax Substances 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- UBXWAYGQRZFPGU-UHFFFAOYSA-N manganese(2+) oxygen(2-) titanium(4+) Chemical compound [O--].[O--].[Ti+4].[Mn++] UBXWAYGQRZFPGU-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
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- 239000002356 single layer Substances 0.000 description 1
- 239000011973 solid acid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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- B01J23/32—Manganese, technetium or rhenium
- B01J23/34—Manganese
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
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- B01J35/647—2-50 nm
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
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Abstract
本发明公开了一种石油蜡加氢精制用负载型催化剂,涉及催化剂制备技术领域,以氧化镁、二氧化锰和氧化镧为活性组分,纳米氧化铝为载体,所述氧化镁占催化剂总含量的20‑25%,二氧化锰占催化剂总含量的8‑12%,氧化镧占催化剂总含量的3‑5%。本发明通过载体预处理进一步扩大纳米氧化铝的孔道,使平均孔径达到20nm,从而有利于脱除石油蜡中的有色物质;并通过载体负载氧化镁、二氧化锰和氧化镧活性组分来增强催化剂的活性,减小催化剂活性的下降速度,以及提高催化剂的利用率。
Description
技术领域:
本发明涉及催化剂制备技术领域,具体涉及一种石油蜡加氢精制用负载型催化剂。
背景技术:
石油蜡是重要的石油产品,是医药、日用化工及其它精细化工产业的重要原料。石油蜡精制的主要方法是采用加氢精制,旨在保留正烷烃的基本组成,脱除以3,4-苯并芘为代表的稠环芳烃等致癌物质及非烃类的硫、氮和氧。石油蜡加氢精制过程是选择性很强的反应,所用催化剂应具有尽量少的固体酸且以弱酸性为主,还需具有大的比表面积和畅通的孔道,同时必须保证活性金属在载体表面单层分散以充分发挥其作用。专利CN 1085594A公开了一种石蜡加氢精制催化剂,采用含高硅的SiO2-Al2O3作载体,在制备过程中加入磷酸来降低载体酸性。该催化剂在加氢饱和方面显示出较强活性,但对于石蜡中有色物质的脱除率较低。
发明内容:
本发明所要解决的技术问题在于提供一种加氢活性好、制备成本低且有色物质脱除率高的石油蜡加氢精制用负载型催化剂。
本发明所要解决的技术问题采用以下的技术方案来实现:
一种石油蜡加氢精制用负载型催化剂,以氧化镁、二氧化锰和氧化镧为活性组分,纳米氧化铝为载体,所述氧化镁占催化剂总含量的20-25%,二氧化锰占催化剂总含量的8-12%,氧化镧占催化剂总含量的3-5%。
其制备方法包括如下步骤:
(1)载体预处理:将纳米氧化铝加入2-3倍重量的质量浓度10%氯化铵水溶液中,充分分散后静置30-60min,并于微波频率2450MHz、功率700W下微波处理5-10min,过滤,将滤渣于100-110℃下干燥5-8h,再于450-500℃下焙烧3-5h,最后继续升温至800-850℃焙烧2-3h即可;
(2)活性组分溶液配制:将氧化镁、二氧化锰和氧化镧加入3-5倍重量的质量浓度20%稀硝酸水溶液中,搅拌下加热至回流状态使其完全溶解,然后自然冷却至55-65℃保温1-1.5h,最后继续自然冷却至室温,即得活性组分溶液;
(3)催化剂制备:向上述所制活性组分溶液中加入预处理后的载体,先于微波频率2450MHz、功率700W下微波处理5-10min,再于超声频率40kHz、功率50W下超声处理15-30min,处理结束后于0-5℃下静置2-3h,然后转入室温下使混合物自然恢复到室温,过滤,将所得滤饼于100-110℃下干燥5-8h,最后于550-600℃下焙烧3-5h后研磨成粉末,即得催化剂。
本发明的有益效果是:本发明通过载体预处理进一步扩大纳米氧化铝的孔道,使平均孔径达到20nm,从而有利于脱除石油蜡中的有色物质;并通过载体负载氧化镁、二氧化锰和氧化镧活性组分来增强催化剂的活性,减小催化剂活性的下降速度,以及提高催化剂的利用率。
具体实施方式:
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐述本发明。
实施例1
(1)载体预处理:将纳米氧化铝加入3倍重量的质量浓度10%氯化铵水溶液中,充分分散后静置30min,并于微波频率2450MHz、功率700W下微波处理8min,过滤,将滤渣于100-110℃下干燥8h,再于450-500℃下焙烧3h,最后继续升温至800-850℃焙烧3h即可;
(2)活性组分溶液配制:将质量比4:2:1氧化镁、二氧化锰和氧化镧加入5倍重量的质量浓度20%稀硝酸水溶液中,搅拌下加热至回流状态使其完全溶解,然后自然冷却至55-65℃保温1h,最后继续自然冷却至室温,即得活性组分溶液;
(3)催化剂制备:向上述所制活性组分溶液中加入预处理后的载体,先于微波频率2450MHz、功率700W下微波处理5min,再于超声频率40kHz、功率50W下超声处理30min,处理结束后于0-5℃下静置2h,然后转入室温下使混合物自然恢复到室温,过滤,将所得滤饼于100-110℃下干燥5h,最后于550-600℃下焙烧3h后研磨成粉末,即得催化剂。
实施例2
(1)载体预处理:将纳米氧化铝加入3倍重量的质量浓度10%氯化铵水溶液中,充分分散后静置60min,并于微波频率2450MHz、功率700W下微波处理5min,过滤,将滤渣于100-110℃下干燥8h,再于450-500℃下焙烧5h,最后继续升温至800-850℃焙烧2h即可;
(2)活性组分溶液配制:将质量比4:2:1氧化镁、二氧化锰和氧化镧加入5倍重量的质量浓度20%稀硝酸水溶液中,搅拌下加热至回流状态使其完全溶解,然后自然冷却至55-65℃保温1.5h,最后继续自然冷却至室温,即得活性组分溶液;
(3)催化剂制备:向上述所制活性组分溶液中加入预处理后的载体,先于微波频率2450MHz、功率700W下微波处理8min,再于超声频率40kHz、功率50W下超声处理30min,处理结束后于0-5℃下静置3h,然后转入室温下使混合物自然恢复到室温,过滤,将所得滤饼于100-110℃下干燥5h,最后于550-600℃下焙烧3h后研磨成粉末,即得催化剂。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (2)
1.一种石油蜡加氢精制用负载型催化剂,其特征在于:以氧化镁、二氧化锰和氧化镧为活性组分,纳米氧化铝为载体,所述氧化镁占催化剂总含量的20-25%,二氧化锰占催化剂总含量的8-12%,氧化镧占催化剂总含量的3-5%。
2.根据权利要求1所述的石油蜡加氢精制用负载型催化剂,其特征在于,其制备方法包括如下步骤:
(1)载体预处理:将纳米氧化铝加入2-3倍重量的质量浓度10%氯化铵水溶液中,充分分散后静置30-60min,并于微波频率2450MHz、功率700W下微波处理5-10min,过滤,将滤渣于100-110℃下干燥5-8h,再于450-500℃下焙烧3-5h,最后继续升温至800-850℃焙烧2-3h即可;
(2)活性组分溶液配制:将氧化镁、二氧化锰和氧化镧加入3-5倍重量的质量浓度20%稀硝酸水溶液中,搅拌下加热至回流状态使其完全溶解,然后自然冷却至55-65℃保温1-1.5h,最后继续自然冷却至室温,即得活性组分溶液;
(3)催化剂制备:向上述所制活性组分溶液中加入预处理后的载体,先于微波频率2450MHz、功率700W下微波处理5-10min,再于超声频率40kHz、功率50W下超声处理15-30min,处理结束后于0-5℃下静置2-3h,然后转入室温下使混合物自然恢复到室温,过滤,将所得滤饼于100-110℃下干燥5-8h,最后于550-600℃下焙烧3-5h后研磨成粉末,即得催化剂。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1085934A (zh) * | 1992-10-17 | 1994-04-27 | 中国石油化工总公司 | 用于精制石油蜡的加氢精制催化剂 |
CN1597859A (zh) * | 2004-07-21 | 2005-03-23 | 中国科学院山西煤炭化学研究所 | 费托合成油品加氢脱氧和烯烃饱和的催化剂及制法和应用 |
CN104108923A (zh) * | 2014-05-19 | 2014-10-22 | 江苏新时高温材料有限公司 | 一种活性煅烧氧化铝微粉及其加工工艺 |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN1085934A (zh) * | 1992-10-17 | 1994-04-27 | 中国石油化工总公司 | 用于精制石油蜡的加氢精制催化剂 |
CN1597859A (zh) * | 2004-07-21 | 2005-03-23 | 中国科学院山西煤炭化学研究所 | 费托合成油品加氢脱氧和烯烃饱和的催化剂及制法和应用 |
CN104108923A (zh) * | 2014-05-19 | 2014-10-22 | 江苏新时高温材料有限公司 | 一种活性煅烧氧化铝微粉及其加工工艺 |
Non-Patent Citations (2)
Title |
---|
赵红军等: "矿化剂及煅烧温度对高温氧化铝性能的影响", 《山东冶金》 * |
黄艳芹等: "《化工工艺学》", 28 February 2012 * |
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