MIT-HOL kerdes [1397]: fempor dezoxidalas (redukalas)

[Omikk Tajekoztatas]

>Kerdes: fempor(vas, rez) dezoxidalas (redukalas). Sajatos=
 eset metangaz
felhasznalasaval.
>Miert: munkahelyen esetleges utolagos eggyuttmukodes
Copyright (c) 1997 American Chemical Society   All Rights Reserved.


Kedves Matyas-Peter Mihaly,
kerdesere az OMIKK allomanya alapjan a kovetkezo informaciokat tudjuk
megadni Onnek.
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120:79049
Two- and three-component, carbon-containing, room
temperature-setting adhesives.
Lewis, Irwin Charles; Greinke, Roland Alfred; Kampe, Dennis James;
Pirro, Terrence Anthony; Bretz, Richard Iverson (Ucar Carbon
Technology Corp., USA).  Ger. Offen. DE 4312571 A1 21 Oct 1993, 7
pp. (Germany).  CODEN: GWXXBX.  CLASS: ICM: C04B026-10.=20
ICS: C04B024-04; C04B024-16; C04B016-00; C04B014-34.=20
APPLICATION: DE 93-4312571 17 Apr 1993.  PRIORITY: US
92-870314 17 Apr 1992.  DOCUMENT TYPE: Patent CA Section: 38
(Plastics Fabrication and Uses) Section cross-reference(s): 57
The 2-component C-contg. adhesives consist of a solid component
contg. a mixt. of C-contg. particles, a phenolic resin, and a strongly
acidic catalysts selected from p-toluenesulfonic acid, benzenesulfonic
acid, CCl3CO2H, naphthalenedisulfonic acid, benzenedisulfonic acid,
CF3CO2H, H2SO4, and methanesulfonic acid, and a liq. component
contg. a liq. phenolic resin dissolved in furfural.  The 3-component
C-contg. adhesives consist of a solid 1st component as above, a liq.
2nd component contg. a liq. resol phenolic resin dissolved in furfural,
and a 3rd component contg. a catalyst as above, dissolved in water or
alc.  These room temp.-setting adhesives contain a mixt. of a C-contg.
material, a catalyst, and a liq. C precursor, have a C yield =B340% upon
heat treatment at ~800=B0, and exhibit room-temp. and elevated-temp.
bending strength of =B350.71 bar.  These adhesives may be used for
cementing the collector elements to the cathode in the manuf. of Al.  A
compn. contg. graphite flour 70, Thermax (carbon black) 30, and
phenolic resin 20 g, was mixed with 40 g 50/50 (vol. ratio) resol
resin-furfural, and 5 g 75/25 (wt. ratio) p-toluenesulfonic acid-water soln.
to give an adhesive.  Graphite articles were bonded together with this
adhesive.  After aging 6 days at room temp., the bonding strength was
86.87 bar.  If the bonded articles were heated 1 h at 140=B0 immediately
after drying, the bonding strength was 206.84 bar, and if the bonded
articles were hardened at 140=B0 and further heated at 850=B0, the bonding
strength was 122.73 bar.

Keywords

carbonaceous adhesive phenolic room temp setting
graphite phenolic adhesive
resol graphite adhesive
carbon black room temp setting adhesive
furfural carbonaceous adhesive
toluenesulfonic catalyst room temp setting adhesive
benzenesulfonic catalyst room temp setting adhesive
chloroacetic catalyst room temp setting adhesive
naphthalenedisulfonic catalyst room temp setting adhesive
benzenedisulfonic catalyst room temp setting adhesive
fluoroacetic catalyst room temp setting adhesive
sulfuric catalyst room temp setting adhesive
methanesulfonic catalyst room temp setting adhesive

Index Entries

Crosslinking catalysts
acid, for room-temp.-setting carbonizable adhesives contg.
phenolic resins and carbon particles
Phenolic resins, uses
adhesives, carbonizable room-temp.-setting, contg. carbon
particles
Carbon black, uses
adhesives, room-temp.-setting carbonizable, contg. phenolic resins
and catalysts
Electric conductors
carbonizable room-temp.-setting adhesives contg. metal powder
as
Adhesives
carbonizable room-temp.-setting, contg. carbon particles and
phenolic resins, for bonding carbon articles
Acids, uses
catalysts, for room-temp.-setting carbonizable adhesives contg.
phenolic resins and carbon particles
Coke
petroleum, powd., adhesives, room-temp.-setting carbonizable,
contg. phenolic resins and catalysts
Coke
pitch, powd., adhesives, room-temp.-setting carbonizable, contg.
phenolic resins and catalysts
Phenolic resins, uses
resol, adhesives, carbonizable room-temp.-setting, contg. carbon
particles
7782-42-5, uses
adhesives, room-temp.-setting carbonizable, contg. phenolic resins
and catalysts
75-75-2
76-03-9, uses
76-05-1, uses
98-11-3, uses
104-15-4, uses
7664-93-9, uses
25167-78-6
30496-93-6
catalysts, for room-temp.-setting carbonizable adhesives contg.
phenolic resins and carbon particles
7439-89-6, uses
12597-69-2, uses
powder, carbonizable room-temp.-setting adhesives contg., for
elec. cond.
98-01-1, uses
solvent, for room-temp.-setting carbonizable adhesives contg.
carbon and phenolic resins
Copyright (c) 1997 American Chemical Society   All Rights Reserved.

112:216158
Study of the feasibility of reaction of methane with acetylene on
heterogeneous metallic catalysts by using methane (13CH4).
Belavin, B. V.; Krasova, E. T.; Kushch, S. D.; Moravskii, A. P.; Ratnikov,
V. I.; Savchenko, V. I.; Tairova, G. G. (Inst. Khim. Fiz., Chernogolovka,
USSR).  Neftekhimiya, 29(6), 746-50 (Russian) 1989.  CODEN:
NEFTAH.  ISSN: 0028-2421.  DOCUMENT TYPE: Journal CA Section:
23 (Aliphatic Compounds) Section cross-reference(s): 67
No hydromethylation of C2H2 by 13CH4 was obsd. over Ni/Cr2O3, 20%
Fe/g-Al2O3 or 40% Co/kieselguhr, and no 13C was incorporated.

Keywords

hydromethylation acetylene methane catalyst failed
iron subgroup metal hydromethylation catalyst
methylation reductive acetylene methane failed

Index Entries

Kieselguhr
catalysts support, for cobalt, in reductive methylation of acetylene
with methane, inactive
Methylation catalysts
reductive, iron-subgroup metals, for acetylene with methane,
inactive
Methylation
reductive, of acetylene with methane, failed
115-07-1, preparation
attempted prepn. of, by reductive methylation of acetylene with
methane, catalytic
74-82-8, reactions
attempted reductive methylation by, of acetylene
74-86-2, reactions
attempted reductive methylation of, with methane
7439-89-6, uses and miscellaneous
catalysts, for reductive methylation of acetylene with methane,
inactive
7440-48-4, uses and miscellaneous
catalysts, on kieselguhr, for reductive methylation of acetylene with
methane, inactive
7440-02-0, uses and miscellaneous
catalysts, with chromic oxide, for reductive methylation of
acetylene with methane, inactive
1308-38-9, uses and miscellaneous
catalysts, with nickel, for reductive methylation of acetylene with
methane, inactive
Copyright (c) 1997 American Chemical Society   All Rights Reserved.

113:42800
Methanation catalysts comprising nickel and aluminum compounds.
Williams, Alan; Wilson, John David; Wragg, Roger Derek; Jones,
Stephen David; Komodromos, Costa; Reynolds, Timothy John (British
Gas PLC, UK).  Brit. UK Pat. Appl. GB 2222963 A1 28 Mar 1990, 28
pp. (United Kingdom)  CODEN: BAXXDU.  CLASS: ICM: B01J021-16.
 ICS: B01J023-74; C07C001-02; C07C009-04.  APPLICATION: GB
88-22469 23 Sep 1988.  DOCUMENT TYPE: Patent CA Section: 45
(Industrial Organic Chemicals, Leather, Fats, and Waxes) Section
cross-reference(s): 51, 67
The title catalysts optionally contg. Cr salts are prepd. by intimately
mixing a Ni-Al compd. with a non-calcined aluminosilicate clay mineral
and at the same time and/or subsequently with at least one additive
comprising an alk. earth and/or rare earth metal compd.  Heating 31.8
kg Ni(NO3)2.6H2O and 15.8 kg Al(NO3)3.9H2O in 80 L H2O to 90=B0,
stirring with 2.05 kg kaolin, adding 24.4 kg Na2CO3 dissolved in 64 L
H2O, vigorously stirring at 85-90=B0, filtering and reslurrying repeatedly=
 (3
times), blending 1.24 kg final moist filter cake with 249.3 g La nitrate
6H2O, calcining, grinding and mixing with 2% graphite produced
catalyst pellets, which were activated and used for methanation test
resulting in 7% Si loss, vs 52% for a control contg. no additive.

Keywords

methanation catalyst prepn
alk earth compd methanation catalyst
rare earth compd methanation catalyst
nickel aluminum chromium methanation catalyst

Index Entries

Bentonite, uses and miscellaneous
Kaolin, uses and miscellaneous
catalyst contg., for methanation with reduced silicon loss
Alkaline earth metals
Rare earth metals, uses and miscellaneous
catalysts contg., for methanation with reduced silicon loss
Natural gas
de-enrichment of, methanation catalyst for
Hydrocarbons, reactions
methanation of, catalyst for
Methanation catalysts
prepn. of, contg. alk. earth and rare earth metals, for reduced
silicon loss
1333-74-0, uses and miscellaneous
carbon oxides and, methanation of, catalyst for
1318-93-0, uses and miscellaneous
catalyst contg., for methanation with reduced silicon loss
1344-28-1, uses and miscellaneous
7439-91-0, uses and miscellaneous
7439-95-4, uses and miscellaneous
7440-09-7, uses and miscellaneous
11099-02-8
catalyst, for methanation with reduced silicon loss
124-38-9, uses and miscellaneous
hydrogen and, methanation of, catalyst for
64-17-5, uses and miscellaneous
67-56-1, uses and miscellaneous
methanation of, catalyst for
74-82-8, preparation
prepn. of, by methanation
Copyright (c) 1997 American Chemical Society   All Rights Reserved.

107:61710
Selective Fischer-Tropsch synthesis on metal powder catalysts
prepared by the potassium reduction of halides in tetrahydrofuran.
Miyake, M.; Takebe, K.; Nomura, M. (Fac. Eng., Osaka Univ., Suita
565, Japan).  J. Catal., 105(2), 359-65 (English) 1987.  CODEN:
JCTLA5.  ISSN: 0021-9517.  DOCUMENT TYPE: Journal CA Section:
51 (Fossil Fuels, Derivatives, and Related Products) Section
cross-reference(s): 45, 67
Metal powders, such as Fe, Co, Ni, Fe-Co, and Fe-Ni prepd. by
reducing metal iodides or bromides with K in refluxing THF were used
as catalysts for Fischer-Tropsch synthesis.  These metal powders
contained very small particles and have large BET surface areas
(28-36 m2/g).  The metal powder catalysts, such as Fe and Fe-Co
(80:20), gave 1-butene with <35 wt.% selectivity at a rather high CO
conversion of over 10 wt.% at 533-553 K, while products on the Co
catalyst obeyed conventional Schulz-Flory type distribution.  The Ni
catalyst showed little activity.  Effects of reaction variables (temp.,
H2/CO feed gas ratio, and compn. of Fe-Co) were investigated.

Keywords

hydrocabon prepn Fischer Tropsch catalysis
metal catalyst Fischer Tropsch synthesis
methane metal catalyst Fischer Tropsch synthesis

Index Entries

Hydrogenation
of carbon monoxide, to hydrocarbons, in Fischer-Tropsch synthesis
Hydrogenation catalysts
potassium-reduced metal powder, selectivity of, in
Fischer-Tropsch synthesis
Hydrocarbons, preparation
C1-6, prepn. of, on potassium-reduced metal catalysts, in
Fischer-Tropsch synthesis
7440-02-0, uses and miscellaneous
catalysts contg., potassium-reduced, in Fischer Tropsch synthesis
of hydrocarbons, selectivity of
7439-89-6, uses and miscellaneous
7440-48-4, uses and miscellaneous
catalysts contg., potassium-reduced, in Fischer Tropsch synthesis,
to hydrocarbons, selectivity of
630-08-0, reactions
hydrogenation of, to hydrocarbons, on potassium-reduced metal
catalysts
1333-74-0, unspecified
hydrogenation, of carbon monoxide, to hydrocarbons, in
Fischer-Tropsch synthesis
7440-09-7, uses and miscellaneous
metal powder catalyst reduced by, in Fischer-Tropsch synthesis of
hydrocarbons, selectivity of
74-82-8, preparation
prepn. of, on potassium-reduced metal catalysts, in
Fischer-Tropsch synthesis
106-98-9, preparation
yields of, in Fischer-Tropsch synthesis, on potassium-reduced
metal catalysts

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