CN1886192A - 在硅烷化氧化铝载体上的铼催化剂及其在烯烃的复分解反应中的应用 - Google Patents
在硅烷化氧化铝载体上的铼催化剂及其在烯烃的复分解反应中的应用 Download PDFInfo
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- 239000003054 catalyst Substances 0.000 title claims abstract description 40
- 238000005649 metathesis reaction Methods 0.000 title claims abstract description 26
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- 229910052702 rhenium Inorganic materials 0.000 title claims abstract description 20
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 title claims abstract description 20
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims description 42
- 238000000034 method Methods 0.000 claims abstract description 30
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 11
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- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 claims description 2
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- 125000005842 heteroatom Chemical group 0.000 claims description 2
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- QYDYPVFESGNLHU-KHPPLWFESA-N methyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC QYDYPVFESGNLHU-KHPPLWFESA-N 0.000 claims description 2
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- SJYNFBVQFBRSIB-UHFFFAOYSA-N norbornadiene Chemical compound C1=CC2C=CC1C2 SJYNFBVQFBRSIB-UHFFFAOYSA-N 0.000 claims description 2
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- 239000012071 phase Substances 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
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- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
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- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- 239000005047 Allyltrichlorosilane Substances 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 101000777220 Homo sapiens Ubiquitin carboxyl-terminal hydrolase 3 Proteins 0.000 description 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 102100031287 Ubiquitin carboxyl-terminal hydrolase 3 Human genes 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000001118 alkylidene group Chemical group 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001412 amines Chemical group 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
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- DIOQZVSQGTUSAI-NJFSPNSNSA-N decane Chemical compound CCCCCCCCC[14CH3] DIOQZVSQGTUSAI-NJFSPNSNSA-N 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 239000012530 fluid Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- DIOQZVSQGTUSAI-UHFFFAOYSA-N n-butylhexane Natural products CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
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- 239000012047 saturated solution Substances 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004230 steam cracking Methods 0.000 description 1
- AFCAKJKUYFLYFK-UHFFFAOYSA-N tetrabutyltin Chemical compound CCCC[Sn](CCCC)(CCCC)CCCC AFCAKJKUYFLYFK-UHFFFAOYSA-N 0.000 description 1
- MRMOZBOQVYRSEM-UHFFFAOYSA-N tetraethyllead Chemical compound CC[Pb](CC)(CC)CC MRMOZBOQVYRSEM-UHFFFAOYSA-N 0.000 description 1
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- XOOGZRUBTYCLHG-UHFFFAOYSA-N tetramethyllead Chemical compound C[Pb](C)(C)C XOOGZRUBTYCLHG-UHFFFAOYSA-N 0.000 description 1
- VXKWYPOMXBVZSJ-UHFFFAOYSA-N tetramethyltin Chemical compound C[Sn](C)(C)C VXKWYPOMXBVZSJ-UHFFFAOYSA-N 0.000 description 1
- JSQJUDVTRRCSRU-UHFFFAOYSA-N tributyl(chloro)silane Chemical compound CCCC[Si](Cl)(CCCC)CCCC JSQJUDVTRRCSRU-UHFFFAOYSA-N 0.000 description 1
- HKFSBKQQYCMCKO-UHFFFAOYSA-N trichloro(prop-2-enyl)silane Chemical compound Cl[Si](Cl)(Cl)CC=C HKFSBKQQYCMCKO-UHFFFAOYSA-N 0.000 description 1
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了一种制备含有活性组分铼和惰性载体介质的非均相催化剂的方法,其特征在于,在将活性组分负载在载体上之前,所述惰性载体先用含氯的硅烷化化合物进行处理,并且通过热处理和然后的快速最终冷却来进行所述非均相催化剂的活化。所述催化剂在烯烃的复分解反应中特别活泼。
Description
本发明涉及制备含有铼作为活性组分和氧化铝作为惰性载体的非均相催化剂的方法,其特征在于,在将活性组分负载在惰性载体上之前,所述载体先用含氯化合物进行硅烷化处理,并且通过热处理和然后的快速最终冷却来进行所述非均相催化剂的活化。
本发明还涉及所述催化剂在烯烃的复分解反应中的应用。
也称为烯烃的歧化作用和歧化反应的复分解反应,是有很大的实际意义的反应,其可用于例如重新平衡(rebalancing)得自蒸汽裂化的烯烃的重量。
当烯烃在合适的催化剂存在下被处理时,它们在反应中被转化为其它烯烃,其中亚烷基基团(R1R2C=)被相互交换,该过程用如下方程式化学计量地表示:
在这样的催化剂的制备中,所述活性组分通常通过浸渍负载在载体介质的表面上。在该反应中,将所述载体与其中溶解有活性组分的溶液混合。当通过蒸发作用除去溶剂后,所述活性组分保留在载体颗粒内。
但是,对于这些催化剂,活性组分必须以5-7%的量存在,并且尽管这样,也只观察到不特别高的转化率,而且在高级烯烃的情况下,观察到低的选择性,这经常可以归因于双键的次级异构化反应(J.Mol.Cat.:46,1988,119-130,和App.Catal.,70,1991,295-306)。
现已发现,借助于含有铼和惰性载体如氧化铝的本发明催化剂,使用低得多的活性组分量,可以克服上述缺点和得到最佳的催化剂性能,本发明的催化剂的特征在于,在用活性组分浸渍载体之前,所述载体先用含氯化合物进行前硅烷化处理,并且通过热处理和然后的快速最终冷却来进行所述非均相催化剂的活化。
所述催化剂即使在没有助催化剂的情况下使用在复分解反应中仍是活性的,并且减少了与异构体形成或次级反应相关的问题,得到高的选择性。
按照上述,本发明的一个目的涉及在烯烃的复分解反应中有活性的、含有铼作为活性组分和氧化铝作为惰性载体介质的非均相催化剂的制备方法,其特征在于,所述惰性载体介质用具有如下通式的硅烷化试剂处理:
RnSiClm (I)
其中R表示胺或C1-C25(异)烷基、C5-C25环烷基、C6-C18芳基或C7-C25烷基芳基,任选含有至少一个选自O、S和N的杂原子;n是满足1<n<3的整数;m是满足1<m<3的整数。
具有通式(I)的硅烷化试剂的实例是:三甲基氯硅烷、烯丙基三氯硅烷、三苯基氯硅烷、三丁基氯硅烷。
所述载体的处理使用原样的所述硅烷化试剂或者优选地通过将所述硅烷化试剂本身溶解在溶剂中进行,所述溶剂选自:烷烃或芳烃,例如己烷、庚烷、辛烷、癸烷、甲苯或二甲苯;烷基醚或环醚,例如乙醚、二甲醚或四氢呋喃;氯化产物,例如二氯甲烷、四氯化碳或氯仿。
在硅烷化试剂溶液存在下,所述氧化铝在-10至100℃范围内的温度下保持0.5至24小时,优选8至15小时。在浸渍结束后,蒸发溶剂,然后所述氧化铝可任选经受400至600℃范围内的热处理。
按照本发明,优选使用的氧化铝具有≥50m2/g,优选100至200m2/g的表面积,和具有大于0.1ml/g,优选0.3至0.8ml/g的总累积孔体积。
从由例如铼的盐或可溶性络合物的溶液构成的前体开始,通过沉淀或浸渍,可以将铼化合物负载在如上所述预处理过的载体上。
铼化合物的前体选自七氧化二铼、高铼酸铵、高铼酸四烷基铵、高铼酸或本领域技术人员已知的其它化合物。
惰性载体的浸渍通常是优选的,使用铼化合物在选自水或有机溶剂,例如烃、醇或醚中的溶剂中的饱和溶液。
为了提高铼盐的溶解性,所述浸渍优选在20至70℃范围内的温度下进行;在这种情况下,所述载体也被加热到相同的温度。
在用金属浸渍载体后,通过在100至200℃范围内的温度下、在干燥空气流中预煅烧,然后在300至600℃范围内的温度下、先在干燥空气流中并然后在氮气流中煅烧,来活化所述催化剂。冷却在氮气流中进行,用时5至30分钟,优选10至20分钟。
在这些催化剂中,相对于所述载体计,铼通常以1至20%重量,优选3至10%重量的量存在。
为了进一步改进催化剂,可以在上述处理以后,用等于载体的孔隙的量的水润湿所述催化剂,并按照上述方法再次煅烧催化剂。
本发明的催化剂可以用于烯烃的复分解反应。
这些反应可以是同复分解(homo-metathesis)(两种相同的烯烃)或共复分解(co-metathesis)(两种不同的烯烃)。
可以经受复分解反应的烯烃是具有2至30个碳原子的单烯烃,例如乙烯、丙烯、丁烯、戊烯、己烯;具有5至20个碳原子的环烯烃,例如环戊烯、环辛烯、降冰片烯;含有4至30个碳原子的、具有两个或更多个不饱和度的烯烃,例如1,4-己二烯、1,7-辛二烯;含有6至30个碳原子的、具有两个或更多个不饱和度的环烯烃,例如1,5-环辛二烯、降冰片二烯、二环戊二烯。
其它烯烃可以是线性或环状的、带有官能团如卤素或酯基的单烯烃或含有数个不饱和度的烯烃,例如油酸甲酯。
复分解反应可以间歇进行,或者通过将原料进料到流化床或固定床反应器来连续进行。反应条件,例如温度、压力和物流根据加入的原料和希望的最终产物进行选择。
复分解反应通常在0至100℃,优选25至60℃的范围内的温度下,和最高10MPa,优选0.1至6MPa范围内的压力下进行,并且可以在有或没有有机溶剂存在的情况下在气相或液相中进行。
当使用溶剂时,溶剂选自醚、脂肪族烃和芳族烃。这些溶剂的实例是乙醚、己烷、庚烷、甲苯等。
所述催化剂通常以相对于反应混合物为1至50%重量,优选1至10%重量的浓度分散在反应介质中。
复分解反应可以任选在助催化剂存在下进行,所述助催化剂选自金属烷基化物,例如四烷基锡(四甲基锡、四乙基锡、四丁基锡),或其它金属烷基化物,如四甲基铅、四乙基铅、三乙基铝、一氯二乙基铝,如USP3,855,338中所述。
下列实施例是举例说明性的,而不是限制本发明的范围。
实施例1
催化剂A的制备
将10g表面积为180m2/g、孔隙率为0.5ml/g的γ-氧化铝在马弗炉中,在空气流中在110℃预煅烧1小时,然后在空气流中在550℃预煅烧4小时。
所述载体然后用含有0.087g三甲基氯硅烷的5ml己烷溶液润湿,并在25℃保持18小时。然后通过将样品在60℃的烘箱中保持2小时,蒸发掉己烷。
这样处理过的载体首先在110℃、在干燥空气流中煅烧1小时,然后在550℃、在干燥空气流中煅烧3小时和在氮气流中煅烧1小时。在氮气流中冷却15分钟后,所述载体然后用含有0.126g NH4ReO4的5ml水溶液润湿四次,在一次浸渍和下一次浸渍之间,通过将样品保持在60℃的烘箱中来蒸发掉水。
这样制备的催化剂具有3.5%重量的铼含量。
实施例2
催化剂A在复分解反应中的应用
在氩气氛中,将358mg如实施例1所述制备的催化剂A和12ml由10微升助催化剂SnMe4和100ml己烷组成的溶液加入到150ml的带尾烧瓶中。
将得到的混合物在轻微搅拌下、在25℃保持10分钟,然后加入13ml 1-己烯。
10分钟后,通过采用内标的气相色谱分析反应混合物。得到如下结果:
-1-己烯转化率:55%
-5-癸烯选择性:100%
实施例3(比较)
催化剂B的制备
将10g表面积为180m2/g、孔隙率为0.5ml/g的γ-氧化铝在马弗炉中,在空气流中在110℃预煅烧1小时,然后在空气流中在550℃预煅烧4小时。
所述载体然后用含有0.28g NH4ReO4的5ml水溶液润湿四次,在一次浸渍和下一次浸渍之间,通过将样品保持在60℃的烘箱中来蒸发掉水。
所述载体首先在110℃、在干燥空气流中煅烧1小时,然后在550℃、在干燥空气流中煅烧3小时和在氮气流中煅烧1小时。然后从马弗炉中取出所述反应器,并在氮气流中冷却15分钟。
这样制备的催化剂具有7.5%重量的铼含量。
实施例4(比较)
催化剂B在复分解反应中的应用
在氩气氛中,将358mg如实施例3所述制备的催化剂B和23ml由10微升助催化剂SnMe4和100ml己烷组成的溶液加入到150ml的带尾烧瓶中。
将得到的混合物在轻微搅拌下、在25℃保持10分钟,然后加入26ml 1-己烯。
30分钟后,通过采用内标的气相色谱分析反应混合物。得到如下结果:
-1-己烯转化率:70%
-5-癸烯选择性:95%
实施例5(比较)
催化剂C的制备
将10g表面积为180m2/g、孔隙率为0.5ml/g的γ-氧化铝在马弗炉中,在空气流中在110℃预煅烧1小时,然后在空气流中在550℃预煅烧4小时。
所述载体然后用含有0.126g NH4ReO4的5ml水溶液润湿四次,在一次浸渍和下一次浸渍之间,通过将样品保持在60℃的烘箱中来蒸发掉水。
所述载体首先在110℃、在干燥空气流中煅烧1小时,然后在550℃、在干燥空气流中煅烧3小时和在氮气流中煅烧1小时。然后从马弗炉中取出所述反应器,并在氮气流中冷却15分钟。
这样制备的催化剂具有3.5%重量的铼含量。
实施例6(比较)
催化剂C在复分解反应中的应用
在氩气氛中,将358mg如实施例5所述制备的催化剂C和23ml由10微升助催化剂SnMe4和100ml己烷组成的溶液加入到150ml的带尾烧瓶中。
将得到的混合物在轻微搅拌下、在25℃保持10分钟,然后加入26ml 1-己烯。
10分钟后,通过采用内标的气相色谱分析反应混合物。得到如下结果:
-1-己烯转化率:15%
-5-癸烯选择性:85%
实施例7(比较)
催化剂D的制备
将10g表面积为180m2/g、孔隙率为0.5ml/g的γ-氧化铝在马弗炉中,在空气流中在110℃预煅烧1小时,然后在空气流中在550℃预煅烧4小时。
所述载体然后用含有0.260g Me3SiOSiMe3的5ml水溶液润湿四次,并在25℃保持18小时。然后通过将样品在60℃的烘箱中保持2小时,蒸发掉己烷。
这样处理过的载体介质首先在110℃、在干燥空气流中煅烧l小时,然后在550℃、在干燥空气流中煅烧3小时和在氮气流中煅烧1小时。在氮气流中冷却15分钟后,所述载体然后用含有0.126g NH4ReO4的5ml水溶液润湿四次,在一次浸渍和下一次浸渍之间,通过将样品保持在60℃的烘箱中来蒸发掉水。
这样制备的催化剂具有3.5%重量的铼含量。
实施例8(比较)
催化剂D在复分解反应中的应用
在氩气氛中,将358mg如实施例7所述制备的催化剂D和23ml由10微升助催化剂SnMe4和100ml己烷组成的溶液加入到150ml的带尾烧瓶中。
将得到的混合物在轻微搅拌下、在25℃保持10分钟,然后加入26ml 1-己烯。
10分钟后,通过采用内标的气相色谱分析反应混合物。得到如下结果:
-1-己烯转化率:35%
-5-癸烯选择性:98%
Claims (24)
1.制备在烯烃的复分解反应中有活性的、含有铼作为活性组分和氧化铝作为惰性载体介质的非均相催化剂的方法,其特征在于,所述惰性载体用具有如下通式的硅烷化试剂处理:
RnSiClm (I)
其中R表示胺或C1-C25(异)烷基、C5-C25环烷基、C6-C18芳基或C7-C25烷基芳基,任选含有至少一个选自O、S和N的杂原子;n是满足1<n<3的整数;m是满足1<m<3的整数。
2.权利要求1所述的方法,其中所述载体的处理使用原样的所述硅烷化试剂或者通过将所述硅烷化试剂溶解在溶剂中进行,在硅烷化试剂溶液存在下,所述氧化铝在-10至100℃范围内的温度下保持2至24小时,并且所述氧化铝经受400至600℃范围内的任选的热处理。
3.权利要求1或2所述的方法,其中所述氧化铝具有大于50m2/g的表面积,和大于0.01ml/g的总累积孔体积。
4.权利要求3所述的方法,其中所述氧化铝具有在100至200m2/g范围内的表面积,和在0.3至0.8ml/g范围内的总累积孔体积。
5.权利要求1所述的方法,其中所述活性铼组分通过沉淀或浸渍法,从呈其盐或可溶性络合物的溶液形式的前体开始,负载在如权利要求1-4中所述预处理过的载体上。
6.权利要求5所述的方法,其中所述铼前体选自七氧化二铼、高铼酸铵、高铼酸四烷基铵和高铼酸。
7.权利要求1所述的方法,其中所述催化剂含有1至20%重量的铼,相对于所述载体计。
8.权利要求7所述的方法,其中所述催化剂含有3至10%重量的铼。
9.权利要求1所述的方法,其中含有在载体介质上的铼的所述催化剂通过在100至200℃范围内的温度下、在干燥空气流中预煅烧,然后在300至600℃范围内的温度下、先在干燥空气流中并然后在氮气流中煅烧来活化。
10.通过复分解反应转化烯烃的方法,其特征在于,该方法在权利要求1所述的催化剂存在下进行。
11.权利要求10所述的方法,其中所述复分解反应可以是同复分解或共复分解。
12.权利要求10所述的方法,其中所述烯烃选自具有2至30个碳原子的单烯烃,具有3至20个碳原子的环烯烃,具有6至30个碳原子的多烯烃,具有5至30个碳原子的环多烯烃。
13.权利要求12所述的方法,其中所述单烯烃选自乙烯、丙烯、丁烯、戊烯、己烯。
14.权利要求12所述的方法,其中所述环烯烃选自环戊烯、环辛烯、降冰片烯。
15.权利要求12所述的方法,其中所述多烯烃选自1,4-己二烯和1,7-辛二烯。
16.权利要求12所述的方法,其中所述环多烯烃选自1,5-环辛二烯、降冰片二烯、二环戊二烯。
17.权利要求12所述的方法,其中所述线性或环状的单烯烃或多烯烃可以带有官能团如卤素或酯基,例如油酸甲酯。
18.权利要求10所述的方法,其中所述复分解反应在0至100℃范围内的温度下和在0至100巴范围内的压力下进行。
19.权利要求18所述的方法,其中所述复分解反应在25至60℃范围内的温度下和在1至60巴范围内的压力下进行。
20.权利要求10所述的方法,其中所述复分解反应在有或没有选自醚、脂肪族烃和芳族烃的溶剂存在的情况下在气相或液相中进行。
21.权利要求20所述的方法,其中所述溶剂选自乙醚、己烷、庚烷、甲苯。
22.权利要求10所述的方法,其中所述催化剂的量在1至50%重量的范围内,相对于所述反应混合物计。
23.权利要求22所述的方法,其中所述催化剂的量在1至10%重量的范围内,相对于所述反应混合物计。
24.权利要求10所述的方法,其中所述复分解反应间歇或连续地进行。
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US4207424A (en) * | 1978-08-09 | 1980-06-10 | Halcon Research & Development Corporation | Catalytic process for dehydration of alcohols |
FR2826880B1 (fr) * | 2001-07-04 | 2004-06-18 | Inst Francais Du Petrole | Composition amelioree de catalyseur pour la metathese des olefines |
-
2003
- 2003-11-27 IT IT002321A patent/ITMI20032321A1/it unknown
-
2004
- 2004-10-26 JP JP2006540217A patent/JP2007514524A/ja not_active Abandoned
- 2004-10-26 US US10/580,834 patent/US20080132744A1/en not_active Abandoned
- 2004-10-26 WO PCT/EP2004/012098 patent/WO2005051534A1/en active Application Filing
- 2004-10-26 EP EP04790880A patent/EP1706203A1/en not_active Withdrawn
- 2004-10-26 CN CNA2004800351731A patent/CN1886192A/zh active Pending
- 2004-10-26 EA EA200600821A patent/EA008342B1/ru not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102407169A (zh) * | 2010-09-21 | 2012-04-11 | 中国石油化工股份有限公司 | 铜、钌、钴、镍、钯和铂基金属催化剂的再生方法 |
CN102407169B (zh) * | 2010-09-21 | 2013-08-14 | 中国石油化工股份有限公司 | 铜、钌、钴、镍、钯和铂基金属催化剂的再生方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1706203A1 (en) | 2006-10-04 |
US20080132744A1 (en) | 2008-06-05 |
WO2005051534A1 (en) | 2005-06-09 |
ITMI20032321A1 (it) | 2005-05-28 |
JP2007514524A (ja) | 2007-06-07 |
EA200600821A1 (ru) | 2006-12-29 |
EA008342B1 (ru) | 2007-04-27 |
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