公开(公告)号：JPH10212253A

公开(公告)日：1998-08-11

申请号：JP1556398

申请日：1998-01-28

Applicant: DEGUSSA

Inventor： BROSMER CHRISTOPH DR ,  ARNTZ DIETRICH DR

IPC: B01J31/08 ,  B01J31/00 ,  C07B61/00 ,  C07C29/00 ,  C07C29/04 ,  C07C29/141 ,  C07C31/20 ,  C07C45/00 ,  C07C45/64 ,  C08F8/00

Abstract: PROBLEM TO BE SOLVED: To provide a production process for 1,3-propanediol by hydration of acrolein in the presence of an ion-exchange resin, followed by hydrogenation of 3-hydroxypropionaldehyde, and an ion exchanger therefor. SOLUTION: A polyamine resin based on a cross-lined polyacrylamide matrix is allowed to react with acrylic acid, an acrylic acid derivative or a salt of an ω-halogenoalkanoic acid and the resultant polyaminepolycarboxylic acid resin is used as a hydration catalyst. The ion exchanger catalyst is characterized by its extremely low volume change and high whole capacity when activated and can be used in high selectivity with high space time yield.

公开(公告)号：JPH10192695A

公开(公告)日：1998-07-28

申请号：JP35124697

申请日：1997-12-19

Applicant: DEGUSSA

Inventor： VON HIPPEL LUKAS ,  ARNTZ DIETRICH DR ,  KUTTRUF BERND ,  WALTER BRIGITTA

IPC: F23B99/00 ,  B01J4/00 ,  B01J12/00 ,  B01J19/00 ,  B01J19/24 ,  B01J35/00 ,  B01J35/04 ,  C01C3/02 ,  F28D7/00 ,  F28F7/02 ,  F23B5/00

Abstract: PROBLEM TO BE SOLVED: To provide a high temp.-resistant reactor for endothermic catalytic reaction which burns stably in heating ducts by forming the walls of heating and reaction ducts extending mutually in parallel of a heat-resistant and gas- impermeable material and coating respectively the wall faces of the reaction ducts with a catalyst for catalytic reaction and the wall faces of the heating ducts with a catalyst for catalytic burning. SOLUTION: A mixture of combustion gas/air is fed into heating ducts 3 by a feeding pipe piece 4 and is made to flow in the second end face direction sealing the heating ducts in the axial direction. Exhaustion of exhaust gas after catalytic combustion is performed from an opening part 8 installed in the barrier walls of the heating ducts 3 in parallel to the layer of the heating ducks 3 from the side wall of a reactor. All the heating ducts 3 are connected with an exhauste gas pipe piece 7. The mixture of reaction gas is passed through the reactor countercurrently to the mixture of combustion gas/air and is exhausted through a gas pipe piece 6 as a mixture of product by a reaction catalyst. In the reactor, the heating ducts and the reaction ducts are directly adjacent to each other but gases are impermeable through each other. It is possible to perform good heat recovery and utilization of energy.

公开(公告)号：JPH11236215A

公开(公告)日：1999-08-31

申请号：JP34868998

申请日：1998-12-08

Applicant: DEGUSSA

Inventor： HIPPEL LUKAS VON DR ,  ARNTZ DIETRICH DR ,  SAUER MANFRED DR ,  VANHEERTUM RUDOLF DR

IPC: C01C3/02

Abstract: PROBLEM TO BE SOLVED: To preferably control the exothermic reaction and to easily assemble into a large-size device by using the reaction heat generated in the reaction to heat the starting gas to the required reaction temp. by indirect heat exchange based on the countercurrent principle. SOLUTION: As for the reactor, a reversal countercurrent reactor consisting of two concentric tubes comprising a tightly sintered aluminum oxide ceramic material is used. The inner tube 1 is equipped with a catalyst bed 3 at the upper end part, while the outer tube 2 is closed at the top end, namely, the top of the reactor. When the starting gas mixture is introduced from the lower side to the inner tube 1, the mixture passes through the catalyst bed 3 and turns downward in the ringlike space between the inner tube 1 and the outer tube 2. At the initiation of the reaction, it is necessary to heat the starting gas mixture and the catalyst to >=800 deg.C. This heating process is carried out by direct heating of the catalyst by a heater jacket or a current surrounding the outer tube 2. After the reaction is initiated, it is enough to use the generated reaction heat to heat the starting gas mixture to the reaction temp.

公开(公告)号：JPH1052645A

公开(公告)日：1998-02-24

申请号：JP10853297

申请日：1997-04-25

Applicant: DEGUSSA

Inventor： HIPPEL LUKAS VON DR ,  BUSSEK CHRISTIAN DR ,  SAUER JOERG DR ,  SAUER MANFRED DR ,  ARNTZ DIETRICH DR

IPC: B01J23/40 ,  B01J23/42 ,  B01J27/24 ,  B01J37/02 ,  C01C3/02

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a coating with catalytic action for synthesis of hydrogen cyanide on a molding. SOLUTION: In a method for manufacturing a coating with catalytic action, a molding is uniformly moistened with a coating dispersion liquid containing at least, one type of particulate platinum group element and any other coating component in a carrier liquid. In addition, the carrier liquid is evaporated and the coating is gradually heated at 1000-1350 deg.C in the presence of nitrogen and/or ammonium, so that the coating is shifted to a catalytic action effective state. In this case, a particulate nitride which has an average particle diameter considerably less than 100μm and contains elements such as aluminum, boron, titanium and silicon is used alone or in mixture form as another cationic coating component.

公开(公告)号：JPH11349562A

公开(公告)日：1999-12-21

申请号：JP13021799

申请日：1999-05-11

Applicant: DEGUSSA

Inventor： HOELDERICH WOLFGANG ,  HEITMANN GEORG PHILIP ,  ARNTZ DIETRICH DR

IPC: C07D201/04 ,  B01J29/70 ,  C07D201/06

Abstract: PROBLEM TO BE SOLVED: To obtain ε-caprolactam in high yield by Beckmann rearrangement of cyclohexanoxime using [B] β-zeolite in a vapor phase within a specific temperature range. SOLUTION: This ε-caprolactam is obtained by Beckmann rearrangement of cyclohexanoxime using [B]β-zeolite as zeolite catalyst in a vapor phase at 250-450 deg.C. The [B] β-zeolite is prepared by agitating an aqueous mixture of H3 BO3 , an alkali metal hydroxide, silicon component, and advantageously microgranular, optionally precipitated silicic acid together with an amine solution, esp. tetraethylammonium hydroxide and/or bromide, under a spontaneously generated pressure, the product is then washed and dried to afford a crystal form which is then dried at

公开(公告)号：JPH10195040A

公开(公告)日：1998-07-28

申请号：JP35662197

申请日：1997-12-25

Applicant: DEGUSSA

Inventor： HOFEN WILLI ,  BOECK WOLFGANG DR ,  RAUTENBERG STEPHAN DR ,  SAUER JOERG DR ,  ARNTZ DIETRICH DR ,  GOEDECKE RALF DR ,  TAUGNER WOLFGANG ,  SONNENSCHEIN RAYMUND DR

IPC: B01J21/04 ,  B01J23/30 ,  C07B61/00 ,  C07C319/08 ,  C07C321/04

Abstract: PROBLEM TO BE SOLVED: To provide a continuous method for producing methylmercaptan useful as a synthetic intermediate for methionine, etc., capable of reducing operation energy cost by treating specific starting substance mixture under specify conditions. SOLUTION: Hydrogen sulfide-newly produced gas 20 is compressed until an intermediate pressure under addition of liquid methanol and circulated hydrogen sulfide gas is mixed with the newly produced gas and the mixture is compressed to operation pressure and further, methanol is fed to compressed gas mixture in the form of methanol vapor 24 to produce a starting substance mixture 25 having 1.1-3 molar ratio of hydrogen sulfide to methanol and the starting substance gas mixture is heated to 150-200 deg.C preheating temperature and further, the starting substance gas mixture 25 is thermally exchanged with reaction heat generated in a catalyst bed to heat the gas mixture to reaction temperature and methanol and hydrogen sulfide are reacted with the gas mixture in contact with a catalyst bed to provide methylmercaptan. It is preferable to inject excess liquid methanol and circulate unvaporized content.

公开(公告)号：JPH10109031A

公开(公告)日：1998-04-28

申请号：JP25840497

申请日：1997-09-24

Applicant: DEGUSSA

Inventor： SAUER JOERG DR ,  BOECK WOLFGANG DR ,  HIPPEL LUCAS VON DR ,  BURKHARDT WERNER ,  RAUTENBERG STEPHAN DR ,  ARNTZ DIETRICH DR ,  HOFEN WILLI

IPC: B01J23/04 ,  B01J23/30 ,  B01J35/10 ,  B01J37/02 ,  C07B61/00 ,  C07C319/08 ,  C07C321/04

Abstract: PROBLEM TO BE SOLVED: To remarkably improve activity and selectivity when the molar ratio of hydrogen sulfide to methanol is small by incorporating a specified amount of cesium tungstate as a promoter in a catalyst consisting of the compact of aluminum oxide. SOLUTION: This catalyst for synthesizing methylmercaptan is composed of the compact of the aluminum oxide containing alkali metal tungstate as the promoter. The catalyst is the cesium tungstate in which the promoter is mixed by the amount of 15-40wt.%, preferably about 20-35wt.% per total weight of the completed catalyst. The so-called activated aluminum oxide is used as the aluminum oxide. The compact is used preferably in the from the granulated or extruded aluminum oxide having about 1-5mm grain size, 180-400m /g specific surface area, about 0.3-1.0ml/g total fine pore volume and 300-900g/l bulk density.

公开(公告)号：JPH1072401A

公开(公告)日：1998-03-17

申请号：JP19215197

申请日：1997-07-17

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  MARTIN MEIER ,  BROSMER CHRISTOPH ,  ARNTZ DIETRICH DR ,  FREUND ANDREAS DR

IPC: B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  C07B61/00 ,  C07C51/235 ,  C07C59/01

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing 3-hydroxypropionic acid in high yield by using 3-hydroxypropionaldehyde as a 3C constituent. SOLUTION: The objective 3-hydroxypropionic acid or its salt is produced by using 3 hydroxypropionaldehyde as a 3C constituent and at least 10wt.% catalyst expressed in terms of a noble metal based on the 3C constituent when the 3C constituent is catalytically oxidized with oxygen or a gas containing the oxygen in aqueous phase in the presence of the catalyst containing the noble metal of the platinum group, and further the objective 3-hydroxypropionic acid or its salt is isolated from the reaction mixture. Moreover, preferably, the catalyst is used in the amount corresponding to 20-50wt.% based on the 3C constituent and a supported catalyst containing platinum is especially used as the catalyst. The catalytic oxidation is preferably performed without regulating the pH at a temperature within a range of 20-60 deg.C.

公开(公告)号：JPH1067701A

公开(公告)日：1998-03-10

申请号：JP19215297

申请日：1997-07-17

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  MEIER MARTIN DR ,  BROSMER CHRISTOPH DR ,  ARNTZ DIETRICH DR ,  FREUND ANDREAS DR

IPC: C07C51/235 ,  C07C55/08

Abstract: PROBLEM TO BE SOLVED: To obtain the subject compound in a high yield useful as a synthetic material by a catalytic oxidation of a C3 component. SOLUTION: This objective malonic acid or its salt can be obtained by carrying out the catalytic oxidation of the C3 component in water phase by oxygen or oxygen containing gas in the presence of a catalyst containing a noble metal selected from platinum group (e.g. Ru, Rh, Pd, Os, Ir, Pt), at pH >=6, at the temperature range of 20-60 deg.C. Easily purchasable 3-hydroxypropionaldehyde or 3-hydroxypropionic acid or their aqueous solution is used as the C3 component. The catalysts containing Palladium or Platinum is preferred as the reaction catalyst, the amount of the catalyst to the C3 component is preferably 20-50wt.%.

公开(公告)号：JPH11292532A

公开(公告)日：1999-10-26

申请号：JP6393399

申请日：1999-03-10

Applicant: DEGUSSA

Inventor： VON HIPPEL LUKAS DR ,  ARNTZ DIETRICH DR ,  VANHEERTUM RUDOLF DR ,  SAUER MANFRED DR ,  KUTTRUF BERND

IPC: C01C3/02

Abstract: PROBLEM TO BE SOLVED: To improve the use of energy by using a catalyst at a high temp. for the reaction of methane as the source gas with ammonia and oxygen to produce hydrogen cyanide, hydrogen and water by self-heating method. SOLUTION: In a reciprocal counterflow type reactor comprising alumina ceramic coaxial two tubes, a platinum-based catalyst 3 disposed on the upper end of the inner tube 1 is preliminarily heated to >=800 deg.C. Methane as the source gas, ammonia and oxygen by 1/2 to 3/2 mol to 1 mol of the hydrogen cyanide to be produced, or air are preliminarily heated to >=800 deg.C and introduced through the lower end of the inner tube 1 to cause the reaction of CH4 + NH4 +1/202 →HCN+H2 O+2H2 at >=1000 deg.C. In This reaction, an excess amt. of oxygen is supplied to compensate the thermal loss. The produced gas mixture passed through the catalyst 3 is changed its direction through the annular intermediate space between the inner tube and the outer tube 2 to descend and then collected. The source gas mixture is heated by self-heating method by heat exchange with the counter flow. The entrance and the exit of the reactor are kept at a low temp. as