white carbon black uesd in super conductive carbon black with high quality and low price

white carbon black uesd in super conductive carbon black with high quality and low price System 1

white carbon black uesd in super conductive carbon black with high quality and low price System 2

white carbon black uesd in super conductive carbon black with high quality and low price

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Loading Port:: Qingdao

Payment Terms:: TT OR LC

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Supply Capability:: 20000 m.t./month

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Specifications

aerosil fumed silica
Amorphous high decentralize of nano powder
larger specific surface area
higher surface activity

white carbon black A150 amorphous fumed silica

production:

Fumed silica is made by the hydrolyzed chlorosilane with high temperature in hydrogen and oxygen blaze. It is a kind of inorganic fine chemical products which is white, nonpoisonous, odourless and amorphous

the technology specification:

Item	A150	A 200	A 380
Specific surface area m2/g (BET way)	170±20	210±20	380±20
PH value(suspension liquid4%)	3.6~4.5	3.6~4.5	3.6~4.5
Heating loss weight(2 hour,105°C) % max	1.5	1.5	1.5
Burning loss (one hour 1000°C)weight % max	1	1	1
SiO2 wt.% min	99.9	99.9	999
Al2O3 wt.% max	0.03	0.03	0.03
Fe2O3 wt.% max	0.05	0.05	0.05
TiO2 wt.% max	0.03	0.03	0.02

Application

Chemical industry: applied in production of high-temperature vulcanized silicone rubber and unsaturated resins

Medical industry: Pharmaceutical powder and flake preparations, medical silicone rubber

Construction industry: applied in production of RTV silicone rubber, silicone neutral glue, paint

Automotive industry: Automotive ground coat paint

Textile industry: Silicone resin defoamers

Electronic communication: Capacitor encapsulant

Aerospace: Aerospace adhesives

Other industries: Senior inks, cosmetics, silicone grease and electrical grade magnesium oxide powder

PACKAGE:

white carbon black uesd in super conductive carbon black with high quality and low price

Q:What is a chemical catalyst?: A substance that participates in chemical reactions but does not change the quality and chemical properties. It can change the reactant activation energy, speed up or slow down the reaction rate.

Q:Chemistry: Does the catalyst participate in the reaction?: The current theory is generally believed that the catalyst to participate in the reaction, the formation of intermediates, and then re-decomposition of intermediates to generate the catalyst, so the quality and nature of the reaction before and after the same. Experiments have shown that although the nature and quality of the catalyst remain unchanged, some of its aspects, such as morphological changes, before the reaction of massive, post-reaction powder, indirectly prove the above theory. Now high school to do the problem generally according to the theory. Such as copper oxidation of copper oxide, copper oxide and then oxidation of ethanol to acetaldehyde, itself is reduced to copper, so copper is ethanol oxidation of acetaldehyde catalyst

Q:Why the amount of catalyst is too small will make the chemical reaction rate slowed down: Can significantly change the reaction rate and its own chemical properties and quantity in the reaction before and after the basic material unchanged. The catalyst has a positive catalyst (i.e., accelerates the reaction rate) and a negative catalyst (i.e., reduces the reaction rate), and generally does not specifically refer to both the positive catalyst.

Q:What is the superiority of the catalyst compared to the stoichiometric reagent?: Mildness: means that the chemical reaction catalyzed by the enzyme is generally carried out under relatively mild conditions

Q:Please help me: A catalyst is a substance which is used to increase or decrease the rate of a reaction, without itself undergoing any chemical change. There are two types of catalysts, positive and negative. Positive catalysts are used to increase the rate of a reaction while negative catalysts are used to decreasing the rate of a reaction. Enzymes are proteins which act as catalysts in biochemical reactions. They operate between a certain pH level and temperature. If there is a change in pH level or temperature, their efficiency decreases.

Q:No one knows the expression of the catalyst and the chemical expression of the acridine: In organic reactions, the catalyst is complex and consists of several or more. Write Chinese characters directly.

Q:What are the methods of catalyst characterization?: Catalyst characterization is through the physical or chemical detection test means, the structure and nature of the catalyst to give a state description, to help explain the characteristics and characteristics of the catalyst,

Q:The addition of the catalyst has no effect on the chemical equilibrium of the movement: The essence of chemical equilibrium is a dynamic equilibrium. Under certain conditions, the equilibrium constant of the reaction is a certain value. The role of the catalyst is to reduce the activation energy required for the reaction, increase the number of activated molecules, and increase the number of molecules per unit time , But the positive reaction is positive for the reaction, so do not change the speed.

Q:Chemical reactions in the presence of impurities will cause catalyst poisoning, how to understand this sentence: Catalyst poisoning reaction of raw materials contained in the trace impurities to the catalyst activity, selectivity significantly decreased or lost phenomenon. The nature of the poisoning phenomenon is a trace of impurities and the catalytic activity of the center of a chemical effect, the formation of non-active species. In the gas-solid heterogeneous catalytic reaction is formed in the adsorption complex. One is that if the toxic and active components of the role of weak, can be a simple way to restore the activity, known as reversible poisoning or temporary poisoning. The other is irreversible poisoning, it is impossible to restore the activity in a simple way. In order to reduce the side reaction activity, it is sometimes necessary to allow the catalyst to be selected for poisoning.

Q:how can you tell when a substance serves as a catalyst?: It makes a reaction run faster and better AND it is not used up by the reaction

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