DE119279C - - Google Patents
Info
- Publication number
- DE119279C DE119279C DENDAT119279D DE119279DA DE119279C DE 119279 C DE119279 C DE 119279C DE NDAT119279 D DENDAT119279 D DE NDAT119279D DE 119279D A DE119279D A DE 119279DA DE 119279 C DE119279 C DE 119279C
- Authority
- DE
- Germany
- Prior art keywords
- platinum
- contact
- clay
- porous
- acid
- 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.)
- Active
Links
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 24
- 229910052697 platinum Inorganic materials 0.000 claims description 12
- 239000004927 clay Substances 0.000 claims description 9
- 229910052570 clay Inorganic materials 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 7
- 230000002745 absorbent Effects 0.000 claims 1
- 239000002250 absorbent Substances 0.000 claims 1
- 239000010425 asbestos Substances 0.000 description 6
- 229910052895 riebeckite Inorganic materials 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 239000008262 pumice Substances 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 239000000969 carrier Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Die Erfindung bezweckt, zu Contactreactionen dienende Substanzen, besonders Platin, in eine beständige Form mit grofser Oberflächenentfaltung zu bringen, um eine möglichst grofse Ausnutzung der Contactsubstänz bei grofser Mannigfaltigkeit in der Construction der Gesammtapparatur zu erzielen.The invention aims to use substances for contact reactions, especially platinum, in to bring about a permanent form with a large surface development in order to achieve the largest possible Utilization of the contact substance with great diversity in the construction of the overall apparatus to achieve.
Zur Erreichung dieser Zwecke ist man darauf angewiesen, die nur durch ihre Oberflächenentfaltung wirkenden Contactkörper in möglichst ausgedehnter Form auf indifferenten Trägern auszubreiten. Als solche Träger, besonders für Platin, sind die verschiedensten Substanzen in Vorschlag gebracht worden (s. z. B. Lunge, Handbuch der Sodaindustrie, 2. Auflage, I. Bd., S. 791), unter denen als die wichtigsten: Asbest, Bimsstein, Glas und Thon-Erwähnung verdienen.To achieve these purposes one is dependent on it, only through their surface unfolding acting contact body in the most extensive form possible on indifferent carriers. As such carriers, especially for platinum, various substances have been proposed (see e.g. Lunge, Handbuch der Sodaindustrie, 2nd edition, I. Bd., P. 791), among which the most important: Asbestos, pumice stone, glass and clay mentioned to earn.
Asbest wurde bisher im ausgedehntesten Mafse als Träger verwendet; derselbe leidet jedoch an dem Fehler der Unbeständigkeit. Die Asbestfaser wird unter dem Einflufs der Hitze und der Säure allmählich mürbe, zerbröckelt infolge dessen und wird pulverig; das Pulver fällt nieder, legt sich dicht zusammen und versagt den circulirenden Gasen den freien Durchgang; man wird somit schon nach kurzer Zeit genöthigt, den alten Platinasbest zu entfernen, das Platin auszulösen und es auf frischen Asbest wieder niederzuschlagen.Asbestos has hitherto been used extensively as a carrier; the same one suffers but the flaw of impermanence. The asbestos fiber is under the influence of the Heat and acid gradually become brittle, as a result crumble and become powdery; the Powder falls down, lies close together, and denies the circulating gases the free ones Passage; one is thus forced to remove the old platinum asbestos after a short time, to release the platinum and to deposit it again on fresh asbestos.
Bimsstein hat in gröfseren Stücken zu viele geschlossene Hohlräume, die, da sie nicht von den Gasen (S O2 und Luft) durchströmt werden, wirkungslos sind; bei Benutzung kleinerer Stücke findet sehr bald eine so dichte Lagerung des Materials statt, dafs der freie Durchtritt der Gase behindert wird. Beim Bimsstein steht in allen Fällen der Verbrauch an Platin in keinem Verhältnifs zur Oberflächenwirkung; er ist viel zu grofs.Pumice stone has too many closed cavities in large pieces, which are ineffective because the gases (S O 2 and air) do not flow through them; If smaller pieces are used, the material will soon be stored so tightly that the free passage of the gases is hindered. In the case of pumice stone, in all cases the consumption of platinum is in no relation to the surface effect; it is much too big.
Bei Verwendung von Glas tritt zunächst ein Abreiben des Platins ein, das auf der glatten Fläche nicht genügend haftet, später aber im Gebrauch eine Einhüllung des Platins in die aus den basischen Bestandtheilen des Glases sich bildenden Sulfate; die Contactwirkung, von Anfang an gering, sinkt schnell auf Null herab. Glas hat deshalb auch praktisch nirgends für genannte Zwecke Verwendung gefunden. When using glass, the platinum rubs off first, which is on the smooth The surface does not adhere sufficiently, but later in use the platinum is encased in the sulphates formed from the basic constituents of glass; the contact effect, low from the start, quickly falling to zero. Therefore, glass has practically nowhere found use for said purposes.
Thon in gesintertem Zustande ist dem Glas, in porösem Zustande dem Bimsstein zu vergleichen, nur dafs er in letzterem Falle wegen der Feinheit der Poren noch viel mehr Platin etc. in sich aufnimmt und dasselbe viel weniger an der Oberfläche zur Wirkung kommen läfst. Vor Asbest und Bimsstein hat er jedoch den wesentlichen Vortheil voraus, dafs man der Masse beliebige Formen geben kann.Clay in the sintered state is to be compared to glass, in a porous state to pumice stone, only that in the latter case, because of the fineness of the pores, it has a lot more platinum, etc. absorbs into itself and the same is much less effective on the surface. However, it has the essential advantage over asbestos and pumice stone that it can be used Mass can give any shape.
Gelingt es, seine fehlerhaften Eigenschaften zu beseitigen, so sind die Vortheile der letzteren Eigenschaft so grofs, dafs dieses Material berufen erscheint, alle anderen als Träger dienenden Substanzen zu verdrängen. Die Herstellung von Thonkörpern, welche genannte fehlerhaften Eigenschaften nicht zeigen, geschieht nun ge-If one succeeds in eliminating its defective properties, the latter are the advantages of the latter Property so great that this material appears to be called upon to all others serving as carriers To displace substances. The manufacture of clay bodies, which are called defective Properties do not show, now happens
mäfs vorliegender Erfindung in der Weise, dafs man Thonkörper aus gesintertem, nicht aufsaugefähigem Material in Form von Kugeln, Cylindern, Platten etc. herstellt und auf diese Scherben eine poröse, ganz dünne Thonschicht aufträgt, die mit der Unterlage durch Brennen aufs Innigste verbunden wird; für beide Zwecke wird ein säure- und hitzebeständiges Thonmaterial gewählt. Taucht man solche Thonkörper in Platinlösung ein, so wird dieselbe nur durch die poröse Oberfläche absorbirt, während der gesinterte Kern nichts aufnimmt. Die durch die dünne, poröse Oberfläche aufgenommene Menge Platin kommt voll zur Wirkung, da die stets frei zwischen den geeignet geformten Körpern circulirende Gasmischung mit der ganzen Oberfläche in Berührung kommt und in die minimale Tiefe der Schicht auch noch hineindiffundirt.According to the present invention in such a way that one does not use sintered clay bodies absorbable material in the form of balls, cylinders, plates, etc. and on them Shards apply a porous, very thin layer of clay, which is then burned to the base is intimately connected; for both purposes becomes an acid and heat resistant Selected clay material. If one immerses such clay bodies in platinum solution, it becomes the same absorbed only through the porous surface, while the sintered core does not absorb anything. The through the thin, porous surface The amount of platinum absorbed is fully effective, since it is always freely circulating between the suitably shaped bodies Gas mixture comes into contact with the whole surface and to the minimum depth also diffused into the layer.
Ein Abbröckeln der Schicht findet nicht statt.The layer does not crumble off.
Bei einem Unwirksamwerden der Contactschicht läfst sich die Contactsubstanz leicht herauslösen und von Neuem auf den gleichen Körpern niederschlagen. (Bei porösen Vollkörpern aus Thon ist ein vollkommenes Auslösen des Platins etc. ohne Zerstörung des Körpers nicht möglich.)If the contact layer becomes ineffective, the contact substance can be easily removed dissolve and cast them all over again on the same bodies. (For porous solid bodies from clay there is a complete release of the platinum etc. without destruction of the Body not possible.)
Die Möglichkeit der beliebigen Formgebung gewährleistet, wie bereits gesagt, eine aufserordentliche Mannigfaltigkeit in der Construction' der Gesammtapparatur; so kann man z. B. auch Röhren beliebigen Querschnitts einseitig •— d. h. innen oder aufsen — mit Contactüberzug versehen und ihre Innen- bezw. Aufsenwandung für Contactreactionen nutzbar machen, während man gleichzeitig die Gegenfläche als Kühl- oder Heizfläche u. s. w. verwenden kann.As already mentioned, the possibility of any shape ensures an extraordinary one Variety in the construction of the general apparatus; so you can z. B. also tubes of any cross-section on one side • - d. H. inside or outside - with contact cover provided and their interior respectively. Make use of expenditure for contact reactions, while at the same time the opposite surface can be used as a cooling or heating surface and so on.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE119279C true DE119279C (en) |
Family
ID=388420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT119279D Active DE119279C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE119279C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE882985C (en) * | 1940-12-14 | 1953-07-13 | Degussa | Process for carrying out catalytic reactions, in particular for the production of hydrocyanic acid |
DE974205C (en) * | 1943-06-23 | 1960-10-20 | Bataafsche Petroleum | Process for the production of spherical catalysts or catalyst carriers with a diameter between 10 and 200ª |
DE1183481B (en) * | 1960-03-24 | 1964-12-17 | Halcon International Inc | Particulate catalyst carrier consisting of a non-absorbent core and a porous outer layer |
DE1221620B (en) * | 1960-03-24 | 1966-07-28 | Halcon International Inc | Process for the production of ethylene oxide |
-
0
- DE DENDAT119279D patent/DE119279C/de active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE882985C (en) * | 1940-12-14 | 1953-07-13 | Degussa | Process for carrying out catalytic reactions, in particular for the production of hydrocyanic acid |
DE974205C (en) * | 1943-06-23 | 1960-10-20 | Bataafsche Petroleum | Process for the production of spherical catalysts or catalyst carriers with a diameter between 10 and 200ª |
DE1183481B (en) * | 1960-03-24 | 1964-12-17 | Halcon International Inc | Particulate catalyst carrier consisting of a non-absorbent core and a porous outer layer |
DE1221620B (en) * | 1960-03-24 | 1966-07-28 | Halcon International Inc | Process for the production of ethylene oxide |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2641548C2 (en) | Powder made from discrete microspheroids | |
DE19753249A1 (en) | Ceramic network, process for its production and use | |
DE1758845B2 (en) | PROCESS FOR MANUFACTURING PRECISION CASTING FORMS FOR REACTIVE METALS | |
DE2242867A1 (en) | METHOD FOR MANUFACTURING IMPLANTABLE, POROESE, CERAMIC BONE REPLACEMENT, BONE COMPOSITE OR PROSTHESIS ANCHORING MATERIALS | |
DE3040754A1 (en) | CERAMIC FILTER MATERIAL | |
DE69012871T2 (en) | Gas filter cartridge obtained by wet processes, in particular for warm and / or radioactive and / or corrosive gases. | |
DE119279C (en) | ||
DE1960289C3 (en) | Process for the production of spherical fuel and / or breeding material particles from uranium dioxide for fuel and / or breeding elements for nuclear reactors and breeding reactors | |
DE19935189A1 (en) | Reusable analytical crucible for analysis of samples by combustion | |
DE2427836A1 (en) | HOLLOW PELLETS AND METHOD FOR MANUFACTURING THEREOF | |
DE3238129A1 (en) | CATALYST CARRIER FOR PURIFYING EXHAUST GAS AND METHOD FOR PRODUCING THE SAME | |
EP0056597B1 (en) | Ceramic heat insulating shaped body and process for the preparation thereof | |
DE188503C (en) | ||
DE112019005828T5 (en) | Exhaust gas purification device and process for the production thereof | |
DE418724C (en) | Process for the production of high quality catalysts | |
EP0206989A1 (en) | Asbest-free material containing inorganic fibres and process for its production | |
CH164914A (en) | Grinding wheel. | |
DE834361C (en) | Material and process for manufacturing refractory products | |
DE21074C (en) | Process for the production of solid, porous stone masses from artificially produced or naturally occurring finely divided silica and organic alkali with respect to alkaline earth compounds | |
DE336281C (en) | Process for treating pumice stone as an aggregate for lightweight concrete | |
DE3604845C2 (en) | Procedure for determining the behavior of refractory materials | |
DE19847049A1 (en) | High temperature ceramic filter production, e.g. for filtering hot gases, glass melts and metal melts, comprises vibration molding mixture of corundum grains, water and binder | |
DE919717C (en) | Body for the reflection-free absorption of electromagnetic radiation and process for their production | |
DE3938933A1 (en) | Ceramic composite article prodn. - by bonding parts with binder of ceramic filler in aq. polymer soln. | |
DE2629680C3 (en) | Process for the production of a transmission body based on asbestos fibers |