Examples of 'gamma alumina' in a sentence
Meaning of "gamma alumina"
gamma alumina - Gamma alumina refers to a type of alumina, which is a chemical compound used in various industrial applications. It is known for its high surface area and stability, and is commonly used as a catalyst or adsorbent in processes such as refining and petrochemical production
How to use "gamma alumina" in a sentence
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gamma alumina
This gamma alumina was used as a catalyst carrier.
In certain particular embodiments gamma alumina is employed.
Gamma alumina is particularly preferred.
Preferably the alumina catalyst is a gamma alumina.
It is also possible to use gamma alumina as the starting material.
The alumina used is usually a beta or gamma alumina.
It is preferably to use gamma alumina as it has a larger specific surface area.
The only other catalyst exemplified is gamma alumina.
Platinum was deposited onto a gamma alumina matrix using an excess impregnation method.
Good results have been obtained with a gamma alumina.
Above this temperature, the gamma alumina incrementally converts to mullite.
The precious metals were supported on the gamma alumina.
In a preferred embodiment, a gamma alumina coated alpha alumina.
This catalyst was a NiMo catalyst supported on macroporous gamma alumina.
Composite substrates comprising gamma alumina are more preferred.
See also
The form of alumina utilized in the most preferred embodiment is gamma alumina.
The platinum and potassium can be precipitated onto the gamma alumina support simultaneously or separately.
Examples of suitable aluminas include boehmite type alumina and gamma alumina.
Advantageously, eta or gamma alumina is used.
Calcination will convert the alumina from the pseudoboehmite form to gamma alumina.
Supports comprising alpha alumina or gamma alumina are more preferred.
This treatment effects conversion of the hydrogel to the corresponding crystalline gamma alumina.
The purpose of this dissertation was develop supported gamma alumina catalysts for diesel oil refining.
A process according to claim 1, characterised in that the alumina is a gamma alumina.
In a preferred embodiment, a gamma alumina coated alpha alumina support is employed.
The preferred components are nickel and tungsten on a gamma alumina support.
Metal scavengers, like gamma alumina can be added to enhance thermal stability.
Preferred outer refractory inorganic oxides are gamma alumina and eta alumina.
The support S5 is a gamma alumina support of the traditional type.
Catalyst B was prepared by first depositing palladium onto the gamma alumina.
That the carrier was predominantly gamma alumina was confirmed by x-ray diffraction.
In a second example, said alumina is gamma alumina.
However, in other embodiments, gamma alumina comprises only part of the catalyst.
In very preferred manner, the alumina is gamma alumina.
However, in certain preferred embodiments, the gamma alumina is chemically bonded to the second catalyst.
In a preferred embodiment, the alumina support is gamma alumina.
Comparative Example 3 The carrier used was a gamma alumina formed and calcined by conventional procedures.
Particularly preferably, the support is constituted by an alumina, preferably a gamma alumina.
Advantageously, eta alumina or gamma alumina is selected.
More preferably, the catalysts according to the invention are constituted by gamma alumina.
The carrier has a conventional formulation with a gamma alumina wash-coated surface on a ceramic base.
In general, it is preferable to use matrices containing alumina, and preferably gamma alumina.
X-ray diffraction analysis showed the presence of gamma alumina and lanthanum oxycarbonate.
According to one or more embodiments, the hydroxylated alumina is substantially free of gamma alumina.
Among the available amorphous aluminas, gamma alumina is most preferred.
Oxychlorination catalyst composition according to claim 6 wherein the alumina is eta and / or gamma alumina.
The preferred wash coat / substrate combination is a gamma alumina coated lithium aluminium silicate foam.
Preferably, the support is alumina and more preferably cubic gamma alumina.
Example 1 A catalyst was prepared by impregnating an gamma alumina support with a solution of zinc nitrate.
The resultant material, after the air calcination, is essentially gamma alumina.
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