WO1998055222A1 - Adsorbant hc thermoresistant - Google Patents
Adsorbant hc thermoresistant Download PDFInfo
- Publication number
- WO1998055222A1 WO1998055222A1 PCT/JP1998/001123 JP9801123W WO9855222A1 WO 1998055222 A1 WO1998055222 A1 WO 1998055222A1 JP 9801123 W JP9801123 W JP 9801123W WO 9855222 A1 WO9855222 A1 WO 9855222A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- type
- silicate
- adsorbent
- content
- adsorption
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
Definitions
- the present invention relates to a heat-resistant HC (hydrocarbon) adsorbent used in an exhaust system of an automobile or the like.
- an HC adsorbent is disposed downstream of the catalyst in the exhaust system.
- zeolite is used as the HC adsorbent.
- the temperature of the exhaust gas flowing through the exhaust system is generally 1 0 0 o n c about the such order, the HC adsorbent heat resistance may correspond to the temperature is required.
- An object of the present invention is to provide the HC adsorbent having sufficiently improved heat resistance and good HC adsorption / desorption performance.
- a heat-resistant HC adsorbent is provided.
- MF I-type metallosilicates are MF I-type aluminosilicates, such as ZSM— It has a three-dimensional skeletal structure represented by 5 zeolites, and the G a position and the In position of the structure correspond to the A 1 position of ZSM-5 zeolite.
- Ga and In exhibit the property that the bonding strength in the three-dimensional skeletal structure is high and the Ga and In are not easily detached from the structure.
- An HC adsorbent having such a three-dimensional skeletal structure and comprising an MF I-type meta-portion silicate having an A1 content set as described above has high heat resistance and excellent HC Has adsorption / desorption performance.
- the heat resistance decreases.
- the amount of A 1 is desirably zero from the viewpoint of improving the heat resistance, but A 1 is contained in the raw material in the synthesis of the MFI-type meta-mouth silicate. Since it is contained as an impurity, it is difficult to reduce the amount of A 1 to zero. Therefore, it can be said that the lower limit of the A1 content is as close as possible to zero.
- Figure 1 is a gas temperature at MF I type Gariumushirike one bets of new states, C 5 H
- FIG. 3 is a graph showing the relationship between the adsorption rate and the C 5 H 10 desorption rate, and FIG. 3 shows the A 1 content and the C 5 H t per minute for the MF type I gallium silicate.
- FIG. 4 is a graph showing the relationship between the adsorption rate and the gas temperature in the new state of MFI type indium silicate and the like, and C 5 . Adsorption rate and C 5 H,.
- FIG. 5 is a graph showing the gas temperature in the MF I-type indium silicate gate or the like after the aging treatment, the relationship between the C 5 H 1D adsorption ratio and C 5 H l0 desorption percentage is there.
- the first raw material was placed in a stainless steel container, and the second raw material was gradually added to the first raw material while stirring the raw material.
- the mixture consisting of the first and second raw materials was stirred for 30 minutes to obtain a uniform gallium silicate alkaline rigel throughout.
- the alkali gel was put into an autoclave, and crystallized by being kept at 170 ° C. for 24 hours with stirring to obtain a crystal slurry.
- Ga 0.4% by weight
- the sodium aluminate in place of chloride Gariumu in the I term (52.7 wt% A 1 2 0 3, 41. 9 wt% Na 2 ⁇ ) except for using, by the I term and the same method, about 1. 3 kg
- a powdery MF type I aluminosilicate (ZSM-5 zeolite) was obtained.
- test gas having the composition shown in Table 1 was prepared assuming exhaust gas.
- Figures 1 and 2 show the measurement results.
- Figure 1 corresponds to the new MF I-type gallium silicate, etc.
- Figure 2 corresponds to the MF I-type gallium silicate after the aging treatment.
- 1, 2 as is apparent from, C 5 by MF I-type gallium silicate gate after aging treatment.
- Adsorption rate and C 5 The desorption rate is almost the same as that in the new state, and thus it can be seen that the MFI gallium silicate has excellent heat resistance.
- MF I-type alumino silicide C 5 H
- the adsorption and desorption performance of the new state is lower than that of the new state, which is due to the low heat resistance of the MFI type aluminosilicate.
- IV A1 content
- each MF I type gallium silicate was incorporated into the exhaust system of the engine (displacement 2200 cc), subjected to aging treatment for 800 ° (:, 100 hours), and then the same as above for each ⁇ FI type gallium silicate. A measurement was made.
- Figure 3 shows the measurement results. From Fig. 3, when the A 1 content A 1 ⁇ 0. Set to a constant 05 wt%, after the aging treatment is also similarly higher C 5 H,. And the new state Adsorption rate can be obtained. This indicates that the MF I-type gallium silicate having an 81 content of 1 ⁇ 0.05% by weight has excellent heat resistance.
- the appropriate Ga content is 0.01% by weight ⁇ Ga ⁇ 0.5% by weight.
- Ga content Ga ⁇ 0. 01 wt% the crystallinity is deteriorated, whereas, Ga> 0. 5 wt% in S i 0 2 / Ga 2 0 3 molar ratio of selective adsorption performance for HC for smaller decrease I do.
- Figures 4 and 5 show the measurement results.
- Figure 4 corresponds to the new MFI type indium silicate
- Figure 5 corresponds to the MFI type indium silicate after aging treatment.
- Figs. 4 and 5 also show the data on the MFI type alumino silicate shown in Figs. 1 and 2, respectively. 4, 5 as is clear from, E - C 5 H 1 by MF I-type indium silicate are one bets after treatment for aging () adsorption ratio and C 5 H l () desorption rate substantially the same as that of the new state Therefore, it can be seen that the MFI type indium silicate has excellent heat resistance.
- the appropriate In content is 0.01% by weight ⁇ In ⁇ 0.6% by weight.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/147,527 US6096674A (en) | 1997-06-03 | 1997-03-17 | Heat-resistant HC adsorbent |
EP98907269A EP0916401B1 (en) | 1997-06-03 | 1998-03-17 | Heat-resistant hc adsorbent |
DE69832865T DE69832865T2 (de) | 1997-06-03 | 1998-03-17 | Hitzebeständiges adsorbens für kohlenwasserstoffe |
CA002261642A CA2261642C (en) | 1997-06-03 | 1998-03-17 | Heat-resistant hc adsorbent |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9145529A JPH10328560A (ja) | 1997-06-03 | 1997-06-03 | 耐熱性hc吸着剤 |
JP9/145529 | 1997-06-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998055222A1 true WO1998055222A1 (fr) | 1998-12-10 |
Family
ID=15387330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/001123 WO1998055222A1 (fr) | 1997-06-03 | 1998-03-17 | Adsorbant hc thermoresistant |
Country Status (6)
Country | Link |
---|---|
US (1) | US6096674A (ja) |
EP (1) | EP0916401B1 (ja) |
JP (1) | JPH10328560A (ja) |
CA (1) | CA2261642C (ja) |
DE (1) | DE69832865T2 (ja) |
WO (1) | WO1998055222A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5376199A (en) * | 1976-12-16 | 1978-07-06 | Shell Int Research | Crystalline silicate* method of making same and use thereof as absorbent* extracting agent* drying agent* ion exchanging agent and molecular sieve |
JPS6434440A (en) * | 1987-07-30 | 1989-02-03 | Idemitsu Kosan Co | Deodorant for automobile |
JPH0218318A (ja) * | 1988-05-11 | 1990-01-22 | Inst Fr Petrole | Mfi構造の新規ガロケイ酸塩、その合成方法および使用方法 |
JPH0271842A (ja) * | 1988-07-12 | 1990-03-12 | Inst Fr Petrole | ガロケイ酸塩型の触媒および軽質c↓2〜c↓4ガスの芳香族化におけるその使用 |
JPH06312132A (ja) * | 1993-04-28 | 1994-11-08 | Mitsubishi Heavy Ind Ltd | 炭化水素の吸着剤及び吸着除去方法 |
JPH07166852A (ja) * | 1993-08-16 | 1995-06-27 | Corning Inc | バイパスエンジン排気浄化システム |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2672885B1 (fr) * | 1991-02-19 | 1994-04-29 | Inst Francais Du Petrole | Utilisation d'un catalyseur de type galloaluminosilicate en aromatisation des hydrocarbures contenant entre 2 et 4 atomes de carbone par molecule. |
FR2674769B1 (fr) * | 1991-04-04 | 1994-04-29 | Inst Francais Du Petrole | Catalyseur du type galloaluminosilicate contenant du gallium, un metal noble de la famille du platine et au moins un metal additionnel, et son utilisation en aromatisation des hydrocarbures. |
JPH04371231A (ja) * | 1991-06-18 | 1992-12-24 | N E Chemcat Corp | 排気ガス浄化用触媒 |
US5354719A (en) * | 1993-05-03 | 1994-10-11 | Intevep, S.A. | Method of manufacturing metallosilicates |
AU702870B2 (en) * | 1995-06-08 | 1999-03-11 | Nippon Shokubai Co., Ltd. | Process for production of (poly)alkylene glycol monoalkyl ether |
-
1997
- 1997-03-17 US US09/147,527 patent/US6096674A/en not_active Expired - Fee Related
- 1997-06-03 JP JP9145529A patent/JPH10328560A/ja active Pending
-
1998
- 1998-03-17 DE DE69832865T patent/DE69832865T2/de not_active Expired - Lifetime
- 1998-03-17 WO PCT/JP1998/001123 patent/WO1998055222A1/ja active IP Right Grant
- 1998-03-17 CA CA002261642A patent/CA2261642C/en not_active Expired - Fee Related
- 1998-03-17 EP EP98907269A patent/EP0916401B1/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5376199A (en) * | 1976-12-16 | 1978-07-06 | Shell Int Research | Crystalline silicate* method of making same and use thereof as absorbent* extracting agent* drying agent* ion exchanging agent and molecular sieve |
JPS6434440A (en) * | 1987-07-30 | 1989-02-03 | Idemitsu Kosan Co | Deodorant for automobile |
JPH0218318A (ja) * | 1988-05-11 | 1990-01-22 | Inst Fr Petrole | Mfi構造の新規ガロケイ酸塩、その合成方法および使用方法 |
JPH0271842A (ja) * | 1988-07-12 | 1990-03-12 | Inst Fr Petrole | ガロケイ酸塩型の触媒および軽質c↓2〜c↓4ガスの芳香族化におけるその使用 |
JPH06312132A (ja) * | 1993-04-28 | 1994-11-08 | Mitsubishi Heavy Ind Ltd | 炭化水素の吸着剤及び吸着除去方法 |
JPH07166852A (ja) * | 1993-08-16 | 1995-06-27 | Corning Inc | バイパスエンジン排気浄化システム |
Non-Patent Citations (1)
Title |
---|
See also references of EP0916401A4 * |
Also Published As
Publication number | Publication date |
---|---|
CA2261642C (en) | 2003-10-14 |
JPH10328560A (ja) | 1998-12-15 |
DE69832865D1 (de) | 2006-02-23 |
CA2261642A1 (en) | 1998-12-10 |
EP0916401A1 (en) | 1999-05-19 |
US6096674A (en) | 2000-08-01 |
DE69832865T2 (de) | 2006-06-22 |
EP0916401A4 (en) | 2000-04-19 |
EP0916401B1 (en) | 2005-12-21 |
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