CN1139912A - 氰化氢的制备 - Google Patents

氰化氢的制备 Download PDF

Info

Publication number
CN1139912A
CN1139912A CN95191445A CN95191445A CN1139912A CN 1139912 A CN1139912 A CN 1139912A CN 95191445 A CN95191445 A CN 95191445A CN 95191445 A CN95191445 A CN 95191445A CN 1139912 A CN1139912 A CN 1139912A
Authority
CN
China
Prior art keywords
platinum
metal catalysts
induction heating
reaction
platinum metal
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.)
Granted
Application number
CN95191445A
Other languages
English (en)
Other versions
CN1060141C (zh
Inventor
R·J·里格特
M·米迪扎迪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Invista Technologies Sarl
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of CN1139912A publication Critical patent/CN1139912A/zh
Application granted granted Critical
Publication of CN1060141C publication Critical patent/CN1060141C/zh
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122Incoherent waves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/0285Heating or cooling the reactor
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01CAMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00Cyanogen; Compounds thereof
    • C01C3/02Preparation, separation or purification of hydrogen cyanide
    • C01C3/0208Preparation in gaseous phase
    • C01C3/0229Preparation in gaseous phase from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process
    • C01C3/0233Preparation in gaseous phase from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process making use of fluidised beds, e.g. the Shawinigan-process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008Controlling the process
    • B01J2208/00017Controlling the temperature
    • B01J2208/00026Controlling or regulating the heat exchange system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008Controlling the process
    • B01J2208/00017Controlling the temperature
    • B01J2208/00026Controlling or regulating the heat exchange system
    • B01J2208/00035Controlling or regulating the heat exchange system involving measured parameters
    • B01J2208/00044Temperature measurement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008Controlling the process
    • B01J2208/00017Controlling the temperature
    • B01J2208/00026Controlling or regulating the heat exchange system
    • B01J2208/00035Controlling or regulating the heat exchange system involving measured parameters
    • B01J2208/00044Temperature measurement
    • B01J2208/00061Temperature measurement of the reactants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008Controlling the process
    • B01J2208/00017Controlling the temperature
    • B01J2208/00106Controlling the temperature by indirect heat exchange
    • B01J2208/00168Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
    • B01J2208/00203Coils
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008Controlling the process
    • B01J2208/00017Controlling the temperature
    • B01J2208/00106Controlling the temperature by indirect heat exchange
    • B01J2208/00168Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
    • B01J2208/00212Plates; Jackets; Cylinders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008Controlling the process
    • B01J2208/00017Controlling the temperature
    • B01J2208/00106Controlling the temperature by indirect heat exchange
    • B01J2208/00265Part of all of the reactants being heated or cooled outside the reactor while recycling
    • B01J2208/00274Part of all of the reactants being heated or cooled outside the reactor while recycling involving reactant vapours
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008Controlling the process
    • B01J2208/00017Controlling the temperature
    • B01J2208/00433Controlling the temperature using electromagnetic heating
    • B01J2208/00469Radiofrequency
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008Controlling the process
    • B01J2208/00017Controlling the temperature
    • B01J2208/00504Controlling the temperature by means of a burner
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/00718Type of compounds synthesised
    • B01J2219/00745Inorganic compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/00718Type of compounds synthesised
    • B01J2219/00745Inorganic compounds
    • B01J2219/00747Catalysts
    • CCHEMISTRY; METALLURGY
    • C40COMBINATORIAL TECHNOLOGY
    • C40BCOMBINATORIAL CHEMISTRY; LIBRARIES, e.g. CHEMICAL LIBRARIES
    • C40B30/00Methods of screening libraries
    • C40B30/08Methods of screening libraries by measuring catalytic activity
    • CCHEMISTRY; METALLURGY
    • C40COMBINATORIAL TECHNOLOGY
    • C40BCOMBINATORIAL CHEMISTRY; LIBRARIES, e.g. CHEMICAL LIBRARIES
    • C40B40/00Libraries per se, e.g. arrays, mixtures
    • C40B40/18Libraries containing only inorganic compounds or inorganic materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Abstract

氰化氢是在铂族金属催化剂存在下由氨和烃气体反应制得,同时催化剂在0.5-30MHz的频率下感应加热。

Description

氰化氢的制备
发明领域
本发明涉及在铂族金属催化剂存在下由氨和烃气体反应制备氰化氢(HCN),同时催化剂在0.5-30MHz的频率下感应加热。
发明背景
氰化氢的毒性很强,但又有着广泛的工业用途,在工业上是一种重要的化合物。氰化氢的工业生产是由氨,过量的烃气体和一种氧化性气体与铂族金属催化剂一起接触制备而得。过量的烃气体被点燃后所产生的热量足以使氨和剩余的烃气体发生吸热反应生成氰化氢。
氰化氢的运输有潜在的危险性。一种避免这种潜在危险性的方法是在使用地点生产该产品,但这就要求安装大量的小型生产设备。这类生产设备在过去是很昂贵的。
本发明的目的是提供一种生产HCN的方法,该方法有相对小的操作规模,但效率高且投资低。
本发明包括使用感应加热铂族金属催化剂,使氨与烃气体反应制备氰化氢。该反应是吸热反应,而且通过使用感应加热使所用的能量能精密地调节,因此浪费的能量最少。
已知多种类型的化学反应可通过感应加热催化剂而进行;如在Edward’s的美国专利5,110,996中用二氯氟甲烷与甲烷反应制备1,1-二氟乙烯,其中反应管中包含一种非金属填料,必要时可含有一种金属催化剂……见第3栏第5行。一般的感应加热使用的频率大约0.1-0.2MHz。
发明概述
本发明是一种制备氰化氢的方法,它包括在0.5-30MHz的频率将铂族金属催化剂感应加热至反应温度,将氨蒸汽与烃气体的混合物与所加热的催化剂接触和回收氰化氢。优选的烃气体是甲烷,但其它的烃气体也可使用,例如含1-6个碳原子的烃气体及它们的混合物。氨对烃气体中碳原子的优选摩尔比大约是1。催化剂的优选形式是金属丝网。优选的铂族金属催化剂是铂;但铂族金属的混合物也可使用。铂族金属催化剂也可以是包含铂族金属的金属丝网或者是由铂族金属做成的金属丝网。催化剂也可以是表面散布有铂族金属的陶瓷基质,例如反应管道镀有铂族金属的陶瓷或者催化剂是镀有铂族金属的陶瓷颗粒。为了可有效地由电感应加热,催化剂必需有至少1.0西门子/米的电导率。本发明方法大约在600-1200℃的反应温度下进行。
优选的实施方案是感应加热以脉冲形式进行。当然脉冲的长度取决于反应器的大小,气体的体积和通过反应器的气体温度,但通常脉冲持续期应至少等于气体在反应管道中的停留时间。
附图简述
附图是适合实施本发明的设备框图。
详细说明
感应加热设备
设备如图1所示。直径为12mm的石英管1被放置在产生交变磁场所必需的铜螺旋管内。线圈在6cm的高度上包括8匝。分隔的耦合线圈3位于主线圈的下面,它通过耦合向主线圈提供能量。在1.5cm的高度上绕有2匝。电容器4与主线圈并联,并使线圈以所需的频率产生谐振。流水通过线圈或环绕电容器用于冷却。使用现有工业设备发电、放大,并通过50欧姆的电缆传送到反应器中。催化剂6放置在石英管1内。氨和烃气体由入口7进入,反应产品,HCN和副产品由出口8移出。感应加热设备放置在铝箱9中。
实例
一个5.5克的90%铂/10%/铑织成的丝网被卷起来后,放人位于感应加热线圈内部的石英管反应器中。石英管中的丝网高度是5.7cm。开始时甲烷和氨气流的比是1∶1,总流速为50mL/min。在接通电源后大约5小时的操作过程中,流速和功率输入是变化的。在总流量为50ml/min和总输入功率为245瓦时的结果如下表所示。
                            表产品组成
1∶1 NH3∶CH4进料流率=50mL/min,输入功率=245瓦
                  表
氢气                                72.5体积.%
氮气                                1.3体积.%
甲烷                                4.4体积.%
氨                                  0.7体积.%
氰化氢                              21.1体积.%
该反应对氰化氢的选择性为88.7%,氨和甲烷的转化率>90%。

Claims (9)

1.一种制备氰化氢的方法,其中包括在0.5-30MHz的频率下将铂族金属催化剂感应加热至反应温度,将氨蒸汽与烃气体的混合物与所加热的催化剂接触和回收氰化氢。
2.权利要求1的方法,其中烃气体是甲烷,甲烷对氨的摩尔比大约是1。
3.权利要求1的方法,其中铂族金属催化剂的电导率至少约为1.0西门子/米。
4.权利要求1的方法,其中铂族金属催化剂的金属是铂。
5.权利要求2的方法,其中铂族金属催化剂是包含至少一种铂族金属的金属丝网。
6.权利要求1的方法,其中反应温度约为600-1200℃。
7.权利要求1的方法,其中铂族金属催化剂镀在反应管的内部。
8.权利要求1的方法,其中感应加热以脉冲形式进行。
9.权利要求8的方法,其中感应加热脉冲的长度大约等于与催化剂接触的气体的停留时间。
CN95191445A 1994-02-01 1995-01-31 氰化氢的一种制备方法 Expired - Lifetime CN1060141C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18947194A 1994-02-01 1994-02-01
US08/189,471 1994-02-01

Publications (2)

Publication Number Publication Date
CN1139912A true CN1139912A (zh) 1997-01-08
CN1060141C CN1060141C (zh) 2001-01-03

Family

ID=22697474

Family Applications (1)

Application Number Title Priority Date Filing Date
CN95191445A Expired - Lifetime CN1060141C (zh) 1994-02-01 1995-01-31 氰化氢的一种制备方法

Country Status (5)

Country Link
US (1) US6287531B1 (zh)
EP (1) EP0742781B1 (zh)
CN (1) CN1060141C (zh)
DE (1) DE69533582T2 (zh)
WO (1) WO1995021126A1 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101896263A (zh) * 2007-12-11 2010-11-24 汉高两合股份公司 借助于感应加热的加热介质进行化学反应的方法
CN102105398A (zh) * 2008-05-21 2011-06-22 阿克马法国公司 含有生物来源碳的氢氰酸
CN101952201B (zh) * 2007-11-13 2013-12-25 巴斯夫欧洲公司 通过气态甲酰胺的催化脱水生产氢氰酸的改进方法
CN105165117A (zh) * 2013-03-15 2015-12-16 赫姆洛克半导体公司 感应加热设备
CN105396589A (zh) * 2015-10-21 2016-03-16 大连理工大学 一种金属负载型催化剂及合成hcn的方法

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6315972B1 (en) 1994-02-01 2001-11-13 E.I. Du Pont De Nemours And Company Gas phase catalyzed reactions
AU3878595A (en) * 1994-11-24 1996-06-17 Quadro Chemicals (Proprietary) Limited Hydrogen cyanide gas production
WO2000075092A1 (en) 1999-06-04 2000-12-14 E.I. Du Pont De Nemours And Company Process for the manufacture of fluoroolefins
US7070743B2 (en) * 2002-03-14 2006-07-04 Invista North America S.A R.L. Induction-heated reactors for gas phase catalyzed reactions
US6919015B2 (en) 2002-12-16 2005-07-19 3M Innovative Properties Company Process for manufacturing fluoroolefins
CN101687658B (zh) 2007-05-14 2013-07-24 因温斯特技术公司 高效反应器和方法
US8585870B2 (en) * 2008-03-05 2013-11-19 E I Du Pont De Nemours And Company Process to C-manufacture acrylonitrile and hydrogen cyanide
DE102009000889A1 (de) 2009-02-16 2010-08-19 Henkel Ag & Co. Kgaa Verfahren zur Durchführung von Oxidationsreaktionen mit Hilfe eines induktiv erwärmten Heizmediums
DE102009028856A1 (de) 2009-08-25 2011-03-03 Henkel Ag & Co. Kgaa Verfahren zur präparativen Fragmentierung mit Hilfe eines induktiv erwärmteen Heizmediums
DE102009045636A1 (de) 2009-10-13 2011-04-14 Henkel Ag & Co. Kgaa Verfahren zur Durchführung von sequentiellen Reaktionen mit Hilfe eines induktiv erwärmten Heizmediums
DE102013209883A1 (de) 2013-05-28 2014-12-04 Evonik Industries Ag Integrierte Anlage und Verfahren zum flexiblen Einsatz von Strom
DE102013209882A1 (de) 2013-05-28 2014-12-04 Evonik Industries Ag Integrierte Anlage und Verfahren zum flexiblen Einsatz von Strom
KR101802686B1 (ko) 2013-12-04 2017-12-28 에보닉 데구사 게엠베하 전기의 유연한 사용을 위한 디바이스 및 방법
WO2017186452A1 (en) * 2016-04-26 2017-11-02 Haldor Topsøe A/S Induction heated aromatization of higher hydrocarbons
WO2017186615A1 (en) * 2016-04-26 2017-11-02 Haldor Topsøe A/S A process for the synthesis of nitriles
IT202100023708A1 (it) * 2021-09-14 2023-03-14 Idrogena S R L Impianto e procedimento per la produzione di idrogeno da scissione di molecole di metano

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA588268A (en) 1959-12-01 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler Method of preparing hydrocyanic acid by reacting hydrocarbons with ammonia in the catalyst bed
US1986348A (en) 1931-06-13 1935-01-01 Du Pont Apparatus for effecting gas reactions
BE544845A (zh) * 1955-02-03
DE1767974C3 (de) 1968-07-06 1975-09-25 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Verfahren zur Herstellung von Blausäure und Wasserstoff aus Acetonitril und Ammoniak
US3577218A (en) * 1968-08-28 1971-05-04 Grace W R & Co Method for the production of hydrogen cyanide wherein platinized mullite serves as a catalyst
US4743522A (en) 1985-09-13 1988-05-10 Minolta Camera Kabushiki Kaisha Photosensitive member with hydrogen-containing carbon layer
GB8722847D0 (en) 1987-09-29 1987-11-04 Electricity Council Performing endothermic catalytic reactions
GB8724561D0 (en) * 1987-10-20 1987-11-25 Ici Plc Production process
US5262145A (en) 1990-10-09 1993-11-16 E. I. Du Pont De Nemours And Company Catalyst for ammonia conversion to HCN
US5470541A (en) * 1993-12-28 1995-11-28 E. I. Du Pont De Nemours And Company Apparatus and process for the preparation of hydrogen cyanide

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101952201B (zh) * 2007-11-13 2013-12-25 巴斯夫欧洲公司 通过气态甲酰胺的催化脱水生产氢氰酸的改进方法
CN101896263A (zh) * 2007-12-11 2010-11-24 汉高两合股份公司 借助于感应加热的加热介质进行化学反应的方法
CN101896263B (zh) * 2007-12-11 2014-09-03 汉高两合股份公司 借助于感应加热的加热介质进行化学反应的方法
CN102105398A (zh) * 2008-05-21 2011-06-22 阿克马法国公司 含有生物来源碳的氢氰酸
CN107032370A (zh) * 2008-05-21 2017-08-11 阿克马法国公司 含有生物来源碳的氢氰酸
CN105165117A (zh) * 2013-03-15 2015-12-16 赫姆洛克半导体公司 感应加热设备
CN105165117B (zh) * 2013-03-15 2017-03-08 赫姆洛克半导体公司 感应加热设备
CN105396589A (zh) * 2015-10-21 2016-03-16 大连理工大学 一种金属负载型催化剂及合成hcn的方法

Also Published As

Publication number Publication date
DE69533582D1 (de) 2004-11-04
EP0742781A1 (en) 1996-11-20
US6287531B1 (en) 2001-09-11
CN1060141C (zh) 2001-01-03
WO1995021126A1 (en) 1995-08-10
EP0742781B1 (en) 2004-09-29
DE69533582T2 (de) 2005-11-17

Similar Documents

Publication Publication Date Title
CN1060141C (zh) 氰化氢的一种制备方法
JPS6355112A (ja) 極超短波加熱流動床による高純度多結晶シリコン製造方法およびその装置
CA2195908C (en) Process for nitrogen trifluoride synthesis
JP2002060215A (ja) シアン化水素の製造法
AU734388B2 (en) Inductively heated catalytic reactor
CN105396589A (zh) 一种金属负载型催化剂及合成hcn的方法
CN105152834B (zh) 微通道反应器中连续制备烯烃和芳烃的方法
JP4001931B2 (ja) 化学反応を誘導的に点火する方法
CN111097426B (zh) 铜基气相催化剂及其制备方法和应用
EP0519699B1 (en) Low pressure drop, high surface area oxidation catalyst and catalyst for production of hydrocyanic acid
CN112500279A (zh) 一种利用微通道技术制备c21二元酸的方法
JP2001348362A5 (zh)
CN110894594A (zh) 一种不锈钢复合材料的石墨烯防腐层的高温涂覆方法
WO1996015983A1 (en) Hydrogen cyanide gas production
CN102786379A (zh) 一种1,1,1,2,3,3,3-七氟丙烷的生产方法
CN216440644U (zh) 一种银粉制备用管式连续反应器
CN215288024U (zh) 一种大管径碳纳米管的纯化装置
CN113244966B (zh) 一种钯镍钛乙二醇配位聚合物非均相催化剂及其制备方法和应用
CN108516535A (zh) 一种大规模制备碳纳米管的方法
CN113955742B (zh) 一种二氧化碳-甲烷重整技术制备碳纳米管的工艺
EP0102343B1 (en) Process for producing nitrilotriacetonitrile
CN220940600U (zh) 一种合成1,6-二氯己烷的设备
JPS59115739A (ja) 反応装置
SU1313342A3 (ru) Способ получени амида @ -оксипропионовой кислоты
CN2617368Y (zh) 二氧化氯消毒剂发生器

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: INVISTA TECH SARL

Free format text: FORMER OWNER: E. I. DU PONT DE NEMOURS AND CO.

Effective date: 20051223

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20051223

Address after: Zurich Switzerland

Patentee after: INVISTA TECHNOLOGIES S.A.R.L.

Address before: Wilmington, Delaware, USA

Patentee before: E. I. du Pont de Nemours and Co.

C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20150131

Granted publication date: 20010103