CHEMICAL CATALYST

There are many methods for preparing palladium catalysts loaded on alumina. The following are several common preparation processes and key points:I. Impregnation method1. Principle: By impregnating...

Palladium catalysts loaded on alumina carriers (palladium/alumina catalysts) have a wide range of uses, mainly in the following aspects:I、Hydrogenation in organic synthesisPalladium/alumina catalys...

Alpha-activated alumina, as a specific form of alumina, has a series of unique physical and chemical properties. The following is a clear introduction to alpha activated alumina:1. Basic featuresNa...

Performance features:Thermal stability: Due to the presence of many small closed pores in the crystal, plate-shaped alumina has excellent heating volume stability and good thermal shock resistance....

Tabular alumina, also known as tabular corundum, is an aluminum oxide material with specific physical and chemical properties. The following is a detailed introduction to plate alumina:Basic featur...

Activated alumina (molecular formula Al2O3-x(OH)2x, 0<x<0.8) is one of the inorganic chemical products widely used in the world.Since activated alumina has a porous structure, high specific surface...

(1) Particle size: The smaller the particle size, the higher the adsorption capacity, but the smaller the particle size, the lower the particle strength, which affects its service life.(2) pH value...

There are two raw materials for the production of activated alumina. One is "quick-release powder" produced by gibbsite or Bayer stone, and the other is pseudo-boehmite produced by aluminate or alu...

Activated alumina belongs to the category of chemical alumina and is mainly used as adsorbents, water purifiers, catalysts and catalyst carriers.Activated alumina has the ability to selectively ads...

Alumina, commonly known as alumina, has a chemical formula of Al2O3. White powder, density 3.9~4.0g/cm3, melting point 2050℃, boiling point 2980℃. It is insoluble in water and slowly soluble in con...

Mainly used for grinding, it is the grinding body of fine grinding equipment such as ball mills, ball mills, and vibration mills. Its grinding efficiency and wear resistance are much better than or...

Mainly in ceramic factories, data shows that using cobblestones (natural ball stones) + 10% high-aluminum balls (φ35MM) to grind mud can shorten the grinding time by 15% compared to using only cobb...

High alumina balls are a category of alumina balls, which are referred to as high alumina balls due to their high alumina content. High-aluminum balls can be subdivided into 90, 92, 95, 99 and othe...

Pure alumina ceramic ball: AL2O3 content ≥99.99%, true specific gravity 3.93g/cm3, Mohs hardness 8.5-9The high-purity alumina ball series has excellent wear resistance and a purity of 99.99%. The h...

Palladium alumina catalyst is a new type of catalyst that can effectively catalyze reactions at low temperatures. It has good activity, stability and selectivity and can be used in many different r...

Activated aluminum oxide or activated alumina is also called activated alumina or activated aluminum oxide. It is a highly porous or granular alumina body with the ability to absorb gases, vapors, ...

There are two raw materials for the production of activated alumina. One is "quick debonding powder" produced by gibbsite or Bayer stone, and the other is pseudo-boehmite produced by aluminate or a...

Alumina, commonly known as alumina, has a chemical formula of Al2O3. White powder, density 3.9~4.0g/cm3, melting point 2050℃, boiling point 2980℃. It is insoluble in water and slowly soluble in con...

Manufacturing Strengthened Glass：Aluminum oxide is the reason why metallic aluminum is not easily corroded in the air. Pure metallic aluminum reacts easily with oxygen in the air, forming a thin al...

Alumina powder is made from industrial aluminum hydroxide or industrial alumina, but unlike silicon carbide and black corundum, alumina powder is calcined at high temperatures using different formu...

The new preparation method of activated alumina proposed in this article eliminates the steps of neutralization, aging, filtration and washing, which can not only shorten the preparation time, but ...

An activated alumina sample was prepared under the conditions of material m (AL): m (CA): m (ST) = 1:0.1:1.5 (calcining temperature is 550°C), and then a Ni-based catalyst was prepared by the impre...

Under the condition of material m (CA) / m (AL) = 10%, the effect of starch content on the main properties of activated alumina was investigated. Table 3 shows the pore structure properties of acti...

Under the condition of material m (AL) / m (ST) = 2/3, the effect of the added amount of citric acid on the properties of activated alumina was investigated. Figure 3 shows the XRD patterns of acti...

Under the conditions of material m (AL) ∶m (CA) ∶m (ST) = 1∶0.1∶1.5, the effect of calcination temperature on the main properties of activated alumina (such as phase and pore structure) was investi...

1.3 Characterization of activated aluminaThe XRD spectrum of the sample was measured on a Panalytical X 'Pert Pro X-ray diffractometer. Tube voltage 40 kV, tube current 30 mA, Cu Kα radiation sourc...

1.1 Preparation of activated aluminaPlace measured amounts of crystallized aluminum chloride and citric acid in a constant temperature water bath at 90°C without adding additional water and stir co...

Activated alumina is a porous solid material with the advantages of large specific surface area and pore volume, controllable pore distribution, high mechanical strength after molding, good thermal...

Alumina used as a catalyst carrier can be summarized into the following types according to its physical and chemical properties and the role of alumina:(1) High temperature alumina carrier. This ty...

The main industrial applications of activated alumina as an adsorbent include gas drying, liquid drying, water purification, selective adsorption in the petroleum industry, and chromatographic sepa...

Activated alumina has a large specific surface area, a variety of pore structures and pore size distributions, and rich surface properties. Therefore, it has a wide range of uses in adsorbents, cat...

Main Properties of Aluminum OxideAlumina refractory is an extremely strong material with high hardness, high wear resistance and high compressive strength. It is highly resistant to thermal shock a...

Activated alumina has a strong adsorption capacity for many liquids, so it is often used in some places for adsorption and dehydration. The surface of the adsorber must be dry before use, so as to ...

Due to the strong polarity of the surface of alumina, it is difficult to disperse uniformly in the polymer; in addition, its thermal conductivity is not high, so a high filling amount is required t...

Activated alumina belongs to the scope of alumina chemicals, mainly used in absorbents, water purifiers, metal catalysts and catalyst carriers. Activated alumina has the ability to selectively adso...

1. Characteristics of alumina(1) Large specific surface area: Activated alumina has a high specific surface area, effectively controlling the firing system of alumina, and can produce activated alu...

As a solid material, active alumina has good adsorption performance. All of them can be used as catalysts, and the micropores on its surface can just meet the requirements for catalysts. However, i...

In many cases, we will add some non-metallic materials to the activated alumina desiccant. What will they do.1、 The introduction of chlorine increases the acidity of acid sites with weak original a...

2. Chemical modification methodThe residual hydroxyl group and residual charge on the surface of nano active alumina catalyst can be used to select modifier purposefully for chemical reaction, chan...

II. Surface modification method1. Physical surface modificationSurface physical modification generally refers to the physical action of modifiers on nano active alumina catalyst particles, such as ...