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Katalysatorträger


AEROSIL® und AEROXIDE® für Katalysatorträger-Anwendungen


AEROSIL® pyrogene Kieselsäure und AEROXIDE® pyrogene Metalloxide können bei der Herstellung von Katalysatoren in vielfältiger Weise eingesetzt werden:

  • Als wesentlicher Bestandteil von Trägermaterialien mit hoher Oberfläche und definierter Oberflächenchemie in dem katalytischen System.

  • Als Rohstoff bei der Zeolith-Synthese.

  • Als Prozesshilfsmittel, z. B. als Binder oder zur Rheologiesteuerung während des Formungsprozesses.

AEROSIL® pyrogene Kieselsäure und AEROXIDE® pyrogene Metalloxide bieten eine Reihe von Vorteilen bei der Katalysator-Herstellung:

  • Es handelt sich um Rohstoffe mit einer extrem hohen chemischen Reinheit und Hitzebeständigkeit.

  • Bedingt durch den kontinuierlichen Herstellprozess ist die Oberflächenchemie (z. B. Hydroxylgruppendichte) praktisch keinen Prozessschwankungen unterworfen.

  • Es wird eine definierte Oberfläche in das Katalysatorsystem eingebracht.

Neben hochreinem Siliciumdioxid, Titandioxid und Aluminiumoxid sind mit dem AEROSIL® Herstellverfahren auch z. B. binäre Mischoxide mit nahezu unbegrenzten Möglichkeiten zur Steuerung der Oberflächenchemie zugänglich. Das AEROSIL® und AEROXIDE® Portfolio bietet eine breite Auswahl feinteiliger Metalloxid-Typen, die für verschiedenste Katalysator-Anwendungen maßgeschneidert Einsatz finden. Das Anwendungsspektrum reicht vom Washcoat für hitzebeständige Abgaskatalysatoren bis zum Rohstoff für inerte Katalysatorträger in der Chemie bzw. Petrochemie.

Zusätzlich hat Evonik eine granulierte Form von AEROSIL® bzw. AEROXIDE® entwickelt, die unter dem Markennamen AEROPERL® erhältlich ist. AEROPERL® Produkte kombinieren die hohe chemische Reinheit von AEROSIL® und AEROXIDE® mit einer verminderten Staubigkeit, höherer Schüttdichte und definierter Porosität.

Empfohlene Produkte:

AEROSIL® 200AEROSIL® MOX 80AEROXIDE® TiO2 P 25AEROXIDE® Alu CAEROPERL® 300/30VP AEROPERL® P 25/20
AEROSIL® Pyrogene Kieselsäure für Katalysatorträger

Datei

Sprache

Catalyst Carrier Newsletter, Issue 01  (pdf, 152 KB)

New heat resistant fumed Titania catalyst-base materials AEROSIL® fumed silica and AEROXIDE® fumed titania are known for many years as valuable raw materials for catalyst production. This newsletter informs about new fumed titania materials which are extremely stable under harsh aging condition (e. g. both specific surface area and crystal structure sustain heat treatments up to 1000°C).

EN

Catalyst Carrier Newsletter, Issue 02  (pdf, 226 KB)

Designing Porous Particles In our second Catalyst Carrier Newsletter new silica catalyst base materials are described in detail. These combine a well-defined pore size distribution with the good processability of precipitated silica during granulation or extrusion.

EN

Catalyst Carrier Newsletter, Issue 03  (pdf, 259 KB)

Introducing AEROPERL® - Granulated Fumed Silica and Metal Oxides from Evonik AEROPERL® products represent an efficient way of introducing the benefits of fumed silica or fumed metal oxides to your catalyst formulation. Evonik has added three more AEROPERL® grades to the product portfolio. These grades are based on titania-silica and silica-alumina mixed oxides and show an excellent thermal stability in combination with the handling advantages of a granulated material.

EN

Catalyst Carrier Newsletter, Issue 04  (pdf, 251 KB)

Introducing AERODISP® - Fumed Silica and Metal Oxides Dispersions from Evonik Due to the purity and well defined physical properties such as surface area and phase structure AEROSIL® Fumed Silica and AEROXIDE® Fumed Metal Oxides frequently used in catalytic applications such as in catalyst washcoats, in extrudates or as raw material for the synthesis of specialty zeolites. However, handling of fumed silica and fumed metal oxides often is challenging, due to the extreme fineness and fluffy structure of these products. To address this challenge Evonik Industries has been manufacturing dispersions based on fumed silica and silica / alumina mixed oxides since 1953. Today, we have added more products to that original set so that we now offer a wide variety of oxides, all of interest to the catalyst industries: TiO2, Al2O3, ZrO2, and several mixed oxide particles, such as SiO2 / TiO2 or SiO2 / Al2O3. The newsletter describes in detail the properties of our new dispersions and their value in catalyst carrier applications.

EN

Catalyst Carrier Newsletter, Issue 05  (pdf, 319 KB)

Measuring Particle Mechanical Strength In this newsletter we report on a technique our researchers have advanced to describe particle mechanical strength. Such measurements, for example, can provide information about relative attrition rates of catalyst carriers. The methodology is easy to employ and the results uncomplicated to Interpret.

EN

Catalyst Carrier Newsletter, Issue 06  (pdf, 565 KB)

New AEROPERL® Fumed Titania Granulates AEROPERL® Fumed Titania Granulates are wellknown in the catalyst industry as high purity raw materials. This newsletter informs about the properties of a newly developed granular type of fumed titania. In contrast to AEROPERL® P25/20 the new product VP AEROPERL® TiO2 P 25 H 6 reveals improved mechanical stability and allows therefore a wider application as catalyst carrier. Please contact us for sampling.

EN

Catalyst Carrier Newsletter, Issue 07  (pdf, 254 KB)

New Temperature Stable Fumed Alumina for Catalyst Applications Alumina is one of the most widely used support materials in heterogeneous catalysis. In this newsletter we describe two new alumina grades co-fumed with small amounts of silica leading to a dramatic increase in thermal stability. Both, VP Alu 560 S and VP Alu 590 S, even when treated up to 1200°C for 24 h, show only little reduction in surface area, whereas AEROXIDE® AluC is sintering and looses its surface area almost completely. Please contact us for sampling.

EN

Catalyst Carrier Newsletter, Issue 08  (pdf, 468 KB)

Temperature stable fumed alumina now available as AEROPERL® In our previous Newsletter #7 we informed about two new experimental grades of fumed alumina: VP Alu 560 S and VP Alu 590 S; both grades are characterized by their excellent thermal stability in comparison to pure fumed alumina, e.g. AEROXIDE® Alu C. This newsletter informs about the availability of these materials as granules. AEROPERL® granulated fumed alumina provides several advantages for numerous catalytic applications.

EN

Catalyst Carrier Newsletter, Issue 09  (pdf, 130 KB)

With decades of experience, Evonik Industries has extensive know-how in the production and development of fumed metal oxides such as silica, alumina and titania. In the present newsletter we introduce our silica rich silica-alumina mixed oxides and their application as base material for acid catalysts. Commercially available silica rich silica-alumina mixed oxides are AEROSIL® MOX 80 and AEROSIL® MOX 170.

EN

Catalyst Carrier Newsletter, Issue 10  (pdf, 345 KB)

With decades of experience, Evonik Industries has extensive know-how in the production and development of fumed metal oxides such as silica, alumina and titania. In the present newsletter we introduce the extraordinary high stability of AEROPERL® 3375/20, a granulated mixed fumed oxide, under harsh hydrothermal conditions in contrast to pure silica.

EN

Industry Information 2242: Inorganic Materials for Catalyst Innovation  (pdf, 1,27 MB)

AEROSIL®, AEROXIDE® and SIPERNAT® - Metal Oxides and Silica Based Materials AEROSIL®, AEROXIDE® and SIPERNAT®, widely known trade names and synonymous with high quality fumed metal oxides or specialty precipitated silicas, have a long history as starting materials of choice for catalyst carrier research and innovative catalyst manufacture. The brochure details products and properties as well as the diverse application of AEROSIL®, AEROXIDE® and SIPERNAT® in catalytic system design and manufacture. Possible catalysis where these carrier materials play an especially important role include: petrochemical, chemical synthesis, automotive and many others.

EN

Technical Information 1243: AEROXIDE® , AERODISP® and AEROPERL® - Titanium Dioxide as Photocatalyst  (pdf, 1,26 MB)

The TI 1243 presents the AEROSIL® fumed titanium dioxide product portfolio. From our gold standard AEROXIDE® TiO2 P25 through the dispersions AERODISP® W 740 X and VP Disp. W 2730 X, this Technical Information reveals the effectiveness of our products as photocatalyst. Here you will read about the special properties of our AERODISP® with different TiO2 filled grade and you will learn about the specially granulated AEROPERL® fumed titanium dioxide. An overview at the end of the brochure, shows examples of typical applications.

EN

Weitere Produkte von Evonik für Katalysatorträger