公开(公告)号：JPH10137533A

公开(公告)日：1998-05-26

申请号：JP31282196

申请日：1996-11-08

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SUZUKI KENJI ,  SUGIYAMA TOYOHIKO ,  MASUDA HIROYUKI ,  OZAKI TOSHIHIKO ,  HORIUCHI TATSURO

IPC: B01D53/34 ,  B01D53/04 ,  B01D53/62 ,  B01D53/81 ,  B01J20/02 ,  C01B32/50 ,  C01B31/20

Abstract: PROBLEM TO BE SOLVED: To provide a high temp. separation method of carbon dioxide using a ceramic exhibiting surface basicity. SOLUTION: In the separation and the recovery of a specific gaseous component (carbon dioxide) from a high temp. combustion gas discharged as a combustion gas, the high temp. combustion gas is passed through an adsorbent containing the ceramic exhibiting basicity as it is or after setted to a prescribed temp. to adsorb the specific gaseous component on the ceramic and each specific gaseous component is selectively separated and recovered by the difference of the temp. of adsorption and desorption of each specific gaseous component to the ceramic.

公开(公告)号：JP2000070711A

公开(公告)日：2000-03-07

申请号：JP26393898

申请日：1998-09-01

Applicant: AGENCY IND SCIENCE TECHN

Inventor： HORIUCHI TATSURO ,  OZAKI TOSHIHIKO ,  SUGIYAMA TOYOHIKO ,  SUZUKI KENJI ,  MORI TOSHIAKI

IPC: B01J21/12 ,  B01J32/00 ,  C01F7/02 ,  C01F7/44

Abstract: PROBLEM TO BE SOLVED: To produce a highly heat resistant porous alumina-base catalyst carrier. SOLUTION: Silica is added to a boehmite sol, this sol is made to gel and the resultant alumina-silica gel is dried and fired to produce the objective highly heat resistance porous alumina-base catalyst carrier. The gel is dried preferably by utilizing the supercritical state of an org. solvent and the dried gel is fired preferably at 1,100-1,500 deg.C firing temp.

公开(公告)号：JP2000005559A

公开(公告)日：2000-01-11

申请号：JP18993198

申请日：1998-06-18

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SUZUKI KENJI ,  HORIUCHI TATSURO ,  SUGIYAMA TOYOHIKO ,  OZAKI TOSHIHIKO ,  SHIBAZAKI YASUO

IPC: B01D53/34 ,  B01D53/04 ,  B01D53/14 ,  B01D53/62 ,  B01D53/81 ,  B01J20/18 ,  C01B32/50 ,  C01B31/20

Abstract: PROBLEM TO BE SOLVED: To provide a method for separating carbon dioxide at high temps. using hydrosodalite. SOLUTION: When a specified gas component (carbon dioxide) is separated and recovered from a high-temp. waste combustion gas, the high-temp. waste combustion gas as such or controlled to a fixed temp. is passed through hydrosodalite to adsorb or react the component on and with the hydrosodalite, then the specified component is selectively separated by the difference between the adsorption temp. and/or reaction temp. of the specified component and the adsorption temp. and recovered. The specified component is separated and recovered in this way at high temps. without cooling the waste gas. Further, since the sensible heat of the separated and recovered specified component such as carbon dioxide is utilized in the catalytic reaction, the specified component is efficiently converted to resources at a low cost, the heat energy to be fed to the catalytic reaction is reduced, and further generation of carbon dioxide is prevented.

公开(公告)号：JPS62288159A

公开(公告)日：1987-12-15

申请号：JP12985686

申请日：1986-06-04

Applicant: AGENCY IND SCIENCE TECHN ,  NISSEI ELECTRIC

Inventor： TORII YASUYOSHI ,  SEKIYA TADASHI ,  TSUZUKI AKIHIRO ,  TAKASHIMA HIROO ,  SUGIYAMA TOYOHIKO ,  TAKAHASHI AKIO

IPC: H05B3/14 ,  C04B35/46

公开(公告)号：JP2000072431A

公开(公告)日：2000-03-07

申请号：JP26393998

申请日：1998-09-01

Applicant: AGENCY IND SCIENCE TECHN

Inventor： CHIN RAIGEN ,  HORIUCHI TATSURO ,  OZAKI TOSHIHIKO ,  SUGIYAMA TOYOHIKO ,  SUZUKI KENJI ,  MORI TOSHIAKI

IPC: B01J35/10 ,  B01J21/08 ,  B01J32/00 ,  C01B33/12 ,  C01B37/02

Abstract: PROBLEM TO BE SOLVED: To obtain an inorg. mesoporous material having superior heat resistance by bringing a mixture of silica, a template agent and an alkali into hydrothermal synthesis, discharging the reaction soln. during the synthesis, adding distilled water and carrying out the synthesis again. SOLUTION: Fumed silica, a template agent, an alkali and distilled water are mixed in a molar ratio of 1:0.25:0.2:35 and the mixture is agitated at 70 deg.C for 2 hr, aged for 24 hr at room temp., poured into an autoclave and held for 24 hr at 120-165 deg.C. Contents are drawn out from the autoclave and filtered to obtain a solid. Distilled water is added to the solid by 30 ml and this mixture is held again in the autoclave at 120-165 deg.C for 24 hr. Then, the contents are drawn out and filtered to obtain a solid and this solid is washed 5 times with distilled water, dried at room temp., heated to 550 deg.C at 1 deg.C/min rate and held for 9 hr to thermally decompose the org. substance.

公开(公告)号：JPH10310897A

公开(公告)日：1998-11-24

申请号：JP7661498

申请日：1998-03-09

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SUZUKI KENJI ,  HORIUCHI TATSURO ,  SUGIYAMA TOYOHIKO ,  OZAKI TOSHIHIKO

IPC: C25D13/02

Abstract: PROBLEM TO BE SOLVED: To produce montmorillonite oriented films and crosslinked montmorillonite oriented films and to obtain a high performance heat insulating material consisting of the crosslinked montmorillonite oriented films. SOLUTION: Two montmorillonite oriented films are produced by electrode reaction by utilizing such characteristics of silicate layers forming montmorillonite that negative charges are generated on the surfaces of the layers and positive charges on the edge faces. Montmorillonite is dispersed in water to prepare a suspension, two electrode plates are placed opposite to each other in the suspension and DC is supplied to form an oriented film consisting of silicate layers laminated parallel to the anode plate on the anode plate and an oriented film consisting of silicate layers arranged perpendicularly to the cathode plate on the cathode plate. Crosslinked montmorillonite oriented films are produced by crosslinking the resultant montmorillonite oriented films.

公开(公告)号：JPH06298520A

公开(公告)日：1994-10-25

申请号：JP10995493

申请日：1993-04-13

Applicant: AGENCY IND SCIENCE TECHN

Inventor： HORIUCHI TATSURO ,  SUGIYAMA TOYOHIKO ,  TAKASHIMA HIROO ,  YASUE KAZUO ,  USHIKI KENICHI

IPC: C01B33/16 ,  C01B33/12

Abstract: PURPOSE:To obtain a silica gel having improved optical characteristics by dispersing ultrafine TiO2 particles in SiO2 colloid, gelatinizing the colloid at a specific temperature and baking the gel. CONSTITUTION:Transparent TiO2 colloid is prepared by diluting 1mol of a Ti alkoxide such as Ti isopropoxide with 5-50mol of an alcohol such as ethanol and dropping the diluted solution under stirring into strongly acidic water such as hydrochloric acid of pH

公开(公告)号：JPS6330360A

公开(公告)日：1988-02-09

申请号：JP12985586

申请日：1986-06-04

Applicant: AGENCY IND SCIENCE TECHN ,  NISSEI ELECTRIC ,  TOSOH CORP

Inventor： TAKAGI HIROYOSHI ,  TAKASHIMA HIROO ,  SUGIYAMA TOYOHIKO ,  TAKAHASHI AKIO ,  TAMURA YOSHIO

IPC: H05B3/10 ,  C04B35/00 ,  H05B3/14

公开(公告)号：JPH1179705A

公开(公告)日：1999-03-23

申请号：JP28629797

申请日：1997-09-05

Applicant: AGENCY IND SCIENCE TECHN

Inventor： OZAKI TOSHIHIKO ,  HORIUCHI TATSURO ,  SUGIYAMA TOYOHIKO ,  SUZUKI KENJI ,  MORI TOSHIAKI

IPC: C01B3/40 ,  B01J23/755 ,  B01J35/10

Abstract: PROBLEM TO BE SOLVED: To reform methane with CO2 without deteriorating a catalyst while ensuring high activity and suppressing the deposition of carbon when Ni is used as the catalyst and to produce a metallic catalyst carried by a highly dispersing and heat resistant alumina aerogel and used in the reforming. SOLUTION: An Ni-Al2 O3 aerogel catalyst contg. nickel highly dispersed in an alumina aerogel is produced by a sol-gel process and the successive supercritical drying and a methane-contg. gas is brought into contact with a CO2 -contg. gas in the presence of the catalyst. The catalyst is produced by adding ethylene glykoxide of a metal such as nickel to a boehmite sol, converting the sol into gel with a pH control agent and them carrying out drying, firing and reduction with hydrogen.

公开(公告)号：JPH07256100A

公开(公告)日：1995-10-09

申请号：JP7972494

申请日：1994-03-24

Applicant: AGENCY IND SCIENCE TECHN

Inventor： HORIUCHI TATSURO ,  SUGIYAMA TOYOHIKO ,  MORI TOSHIAKI

IPC: C04B35/10 ,  B01J21/04 ,  B01J32/00 ,  C01B13/32

Abstract: PURPOSE:To obtain a catalyst carrier stably keeping a large surface area even at high temp. and capable of being stably operated over a long pieriod of time by drying an alumina aerogel obtained by gelling a boehmite sol and subsequently baking the same. CONSTITUTION:Nitric acid is added to a boehmite sol to peptize the same to obtain a transparent sol. Urea is added to the transparent sol and, when this sol is held at a specific temp. in a hermetically closed container, it is gelled after about 6hr. The obtained gel is immediately immersed in ethanol to substitute water present in the pores of the gel with ethanol. After substitution, the gel is subjected to ethanol supercritical drying under specific conditions in an autoclave and subsequently baked for 5hr at 1100-1500 deg.C. The gel has a theta-phase even after baking and shows good phase transition suppressing effect. As a result, since an alumina carrier keeps a large surface area stably even at a high temp., it is unnecessary to frequently replace a catalyst when the catalyst is adapted to a catalytical combustion system and the lowering of the function due to the deterioration of the catalyst is prevented and an operation stable over a long period of time is possible.