CN101778854A - 用于将Si-H化合物转化成Si-卤素化合物的方法 - Google Patents
用于将Si-H化合物转化成Si-卤素化合物的方法 Download PDFInfo
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- CN101778854A CN101778854A CN200880023219A CN200880023219A CN101778854A CN 101778854 A CN101778854 A CN 101778854A CN 200880023219 A CN200880023219 A CN 200880023219A CN 200880023219 A CN200880023219 A CN 200880023219A CN 101778854 A CN101778854 A CN 101778854A
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- silicon compound
- compounds
- silane
- halogen
- hydrogen halide
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 150000001875 compounds Chemical class 0.000 title description 4
- 150000003377 silicon compounds Chemical class 0.000 claims abstract description 16
- 229910000039 hydrogen halide Inorganic materials 0.000 claims abstract description 9
- 239000012433 hydrogen halide Substances 0.000 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 7
- 239000007789 gas Substances 0.000 claims abstract description 5
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 3
- 229910000077 silane Inorganic materials 0.000 claims description 10
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 125000005843 halogen group Chemical group 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 description 5
- YGZSVWMBUCGDCV-UHFFFAOYSA-N chloro(methyl)silane Chemical compound C[SiH2]Cl YGZSVWMBUCGDCV-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical group [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical group BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Chemical group 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- PFMKUUJQLUQKHT-UHFFFAOYSA-N dichloro(ethyl)silicon Chemical compound CC[Si](Cl)Cl PFMKUUJQLUQKHT-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 150000002896 organic halogen compounds Chemical class 0.000 description 2
- 150000001282 organosilanes Chemical class 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002152 alkylating effect Effects 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Chemical group 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/12—Organo silicon halides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/12—Organo silicon halides
- C07F7/121—Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20
- C07F7/123—Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20 by reactions involving the formation of Si-halogen linkages
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
本发明涉及用于将具有Si-H键的硅化合物(H)转化成具有Si-卤素键的硅化合物(C1)的方法,其中在气相中在存在γ-氧化铝的情况下使硅化合物(H)与卤化氢反应。
Description
技术领域
本发明涉及在气相中用卤化氢使Si-H化合物转化成Si-卤素化合物的方法。
背景技术
在制备卤硅烷或有机卤硅烷时,经常产生还包含具有Si-H的硅烷的混合物。该硅烷可以是所期望的,并且可以纯净的形式从混合物分离出。但也可以是非期望的,因此必须加以去除。用于分离硅烷混合物的最普通的方法是蒸馏。若现在含有Si-H的硅烷及一种或多种其他硅烷的沸点相当接近或者甚至形成共沸混合物,则蒸馏变得复杂且昂贵。
US 5,336,799A描述了在Pt或Pd催化剂上使含有Si-H的化合物通过与有机卤化物反应而转化成对应的有机硅烷。反应速度缓慢并且需要比较昂贵的有机卤化物。
EP 423 948A描述了在诸如Pd、Pt、Ni的金属催化剂上使含有Si-H的有机硅烷与卤化氢反应生成有机卤硅烷。催化剂昂贵并且由于缓慢氧化成为金属卤化物而发生催化剂的钝化。
US 5,302,736A描述了用于此目的的Ag或Au催化剂,但是反应进行得过于缓慢。
US 3,754,077A描述了在气相中在诸如活性炭、Al2O3或SiO2的固体催化剂上用卤化氢使具有一个或多个Si-H键的卤硅烷转化成四卤硅烷。该方法仅是针对不含有机基团的硅烷而开发的,并且需要200℃以上的温度。
发明内容
本发明的目的在于,提供用于将含有Si-H的硅烷转化成具有改变的沸点的硅烷的改进的方法。
本发明涉及用于将具有Si-H键的硅化合物(H)转化成具有Si-卤素键的硅化合物(Cl)的方法,其中在气相中在存在γ-氧化铝的情况下使硅化合物(H)与卤化氢反应。
该方法在相对低的温度下进行,并且适合于所有具有Si-H键的可蒸发的硅化合物(H)。γ-氧化铝催化剂具有非常长的工作寿命,并且非常容易操作。
具有Si-H键的硅化合物(H)优选为有机聚硅氧烷、有机聚硅烷,特别是单硅烷。
硅烷(H)优选具有通式1
RxSiH4-x (1),
其中,
R代表可被卤素基团取代的单价C1-C18烃基,或卤素基团,及
x代表1、2或3的值。
C1-C18烃基R优选为苯基或C1-C6烷基、乙烯基或烯丙基,特别是甲基或乙基。R上的卤素取代基优选为氟、氯和溴,特别是氯。
卤素基团R优选为氟、氯和溴,特别是氯。
根据本发明的方法适用于对来自直接合成甲基氯硅烷,特别是含有作为副产物的硅化合物(H)尤其是EtHSiCl2以及可能的其他副产物的甲基氯硅烷的粗产品以及经预提纯的产品进行提纯。
硅化合物(H)在甲基氯硅烷中的浓度优选为10至5000ppm。
同样作为直接合成甲基氯硅烷的副产物产生的烃裂解成为更低沸点的烃。
所用的卤化氢优选为氯化氢或溴化氢,特别是氯化氢。
相对于每摩尔在硅化合物(H)中的氢,优选使用1.5至50摩尔,特别是3至10摩尔的卤化氢。
所用的γ-氧化铝作为粉末或者以成型体的形式使用。孔体积优选为至少80%。BET表面积优选为至少200m2/g,特别是至少300m2/g。
压力和温度可以在宽的范围内改变,并且优选与上游的塔的条件相匹配,该塔供应具有富集的硅化合物(H)尤其是EtHSiCl2的馏份。
根据本发明的方法优选在至少50℃,特别是至少80℃,并且优选最高190℃,特别是最高150℃的温度下实施。
根据本发明的方法优选在管式反应器中实施,其中混合物优选以蒸汽的形式输入。
前述式中的所有符号的含义均相互独立。
具体实施方式
在下面的实施例中,除非另有说明,所有的量和百分比数据均是基于重量,所有的压力均为0.10MPa(绝对),而所有的温度均为20℃。
实施例:
在内径为50mm、长度为600mm且由热载体(热传导介质)加热的管式反应器中装入1L可商购的、孔体积为87%且BET表面积为244m2/g的γ-氧化铝压出型材。在110℃的热载体温度和1bar的过压(表压)下,引导含有360ppm的乙基二氯硅烷和1300ppm的C7-C8烃的600g/h甲基氯硅烷馏份与2L/h氯化氢一起经过催化剂。利用GC分析经浓缩的产品。其不含乙基二氯硅烷,而85%的C7-C8烃裂解成为丙烷和丁烷。
Claims (5)
1.用于将具有Si-H键的硅化合物(H)转化成具有Si-卤素键的硅化合物(Cl)的方法,其中在气相中在存在γ-氧化铝的情况下使硅化合物(H)与卤化氢反应。
2.根据权利要求1的方法,其中所述硅化合物(H)是通式1的硅烷
RxSiH4-x (1),
其中,
R代表可被卤素基团取代的单价C1-C18烃基,或卤素基团,及
x代表1、2或3的值。
3.根据权利要求1或2的方法,其中所用的卤化氢是氯化氢。
4.根据权利要求1至3之一的方法,其中所述γ-氧化铝的BET表面积为至少200m2/g。
5.根据权利要求1至4之一的方法,其中所述温度为50℃至190℃。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007030949A DE102007030949A1 (de) | 2007-07-04 | 2007-07-04 | Verfahren zur Umwandlung von Si-H-Verbindungen in Si-Halogen-Verbindungen |
DE102007030949.1 | 2007-07-04 | ||
PCT/EP2008/057256 WO2009003805A1 (de) | 2007-07-04 | 2008-06-11 | Verfahren zur umwandlung von si-h-verbindungen in si-halogen-verbindungen |
Publications (1)
Publication Number | Publication Date |
---|---|
CN101778854A true CN101778854A (zh) | 2010-07-14 |
Family
ID=39735522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200880023219A Pending CN101778854A (zh) | 2007-07-04 | 2008-06-11 | 用于将Si-H化合物转化成Si-卤素化合物的方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100179341A1 (zh) |
EP (1) | EP2167513A1 (zh) |
JP (1) | JP2010531832A (zh) |
KR (1) | KR20100024953A (zh) |
CN (1) | CN101778854A (zh) |
DE (1) | DE102007030949A1 (zh) |
WO (1) | WO2009003805A1 (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010002577A1 (de) * | 2010-03-04 | 2011-09-08 | Wacker Chemie Ag | Verfahren zur Umwandlung von Disilanen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1254785A (en) | 1968-03-28 | 1971-11-24 | Degussa | A process for the production of silicon tetrahalides |
US4985579A (en) | 1989-10-16 | 1991-01-15 | Dow Corning Corporation | Removal of hydrogen-containing silanes from organosilane mixtures |
DE4240717A1 (de) | 1992-12-03 | 1994-06-09 | Wacker Chemie Gmbh | Verfahren zur Entfernung von wasserstoffhaltigen Silanen aus Mehtylchlorsilanen |
DE4241696A1 (de) | 1992-12-10 | 1994-06-16 | Wacker Chemie Gmbh | Verfahren zur Entfernung von wasserstoffhaltigen Silanen aus Silanen |
DE19845641A1 (de) * | 1998-10-05 | 2000-04-06 | Bayer Ag | Verfahren zur Herstellung von dicycloaliphatischen Aminen |
-
2007
- 2007-07-04 DE DE102007030949A patent/DE102007030949A1/de not_active Withdrawn
-
2008
- 2008-06-11 US US12/665,862 patent/US20100179341A1/en not_active Abandoned
- 2008-06-11 KR KR1020097026883A patent/KR20100024953A/ko not_active Application Discontinuation
- 2008-06-11 JP JP2010513836A patent/JP2010531832A/ja not_active Withdrawn
- 2008-06-11 CN CN200880023219A patent/CN101778854A/zh active Pending
- 2008-06-11 EP EP08760814A patent/EP2167513A1/de not_active Withdrawn
- 2008-06-11 WO PCT/EP2008/057256 patent/WO2009003805A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP2167513A1 (de) | 2010-03-31 |
US20100179341A1 (en) | 2010-07-15 |
DE102007030949A1 (de) | 2009-01-08 |
JP2010531832A (ja) | 2010-09-30 |
KR20100024953A (ko) | 2010-03-08 |
WO2009003805A1 (de) | 2009-01-08 |
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Application publication date: 20100714 |