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Why can chromium oxide be used in petrochemical industry

What is chromium oxide?

The molecular formula of chromium oxideis Cr203 oxide, with a molecular weight of 152, dark lawn green crystalline powder, a loved one thickness of 5.21, a melting point of 1990 ℃, insoluble in water, slightly soluble in acid, and magnetic. Common chromium substances consist of yellow-green crystal potassium dichromate K2Cr207 with a relative thickness of 2.7, yellow crystal potassium chromate K2Cr04 with a family member density of 2.5, yellow crystal salt chromate Na2CrO4 · 10H2O, yellow crystal lead chromate PbCr04. The above chromium salts are disintegrated right into Cr203 under a minimizing atmosphere; It is the colored oxide of eco-friendly glass; Under the condition of strong oxidation, the quantity of high-valent chromium CrO3 is extra, that makes the glass yellow and environment-friendly; In a solid alkaline glass (such as high lead glass), the glass is tinted yellow primarily by Cr03. Cr203 and CuO share an area of pure eco-friendly. In producing containers and jars, cheap chromium slag (the residue after chromite manufacturing) is frequently utilized. In the production of porcelains, it is suitable for manufacturing eco-friendly polish, red polish (adding standard lead chromate 2PbO · PbCr04), grey polish (adding ZnO), and also yellow sleeve (including TiO2). It is the raw material for manufacturing environment-friendly shade concrete.

Crystal structure of chromium oxide Cr2O3 has an aAl2O3 structure, as well as this corundum-type crystal is made up of octahedral voids created by thick stacking of oxygen ions as well as dental filling of M ions. The ionic radii of Cr and also O2 are recognized to be 0.069 nm and also 0.132 nm, specifically 52, in the variety of 0.414 ~ 0.732, so the control number of Cr+is 6, so in the octahedral gap, a chromium ion is bordered by 6 oxygen ions. In the crystal structure of C2O3, oxygen ions inhabit the settings of each latticework of the close-packed hexagonal crystal, and chromium ions are situated in the octahedral void of the close-packed hexagonal framework. In the close-packed hexagonal and face-centered cubic crystal samples, each selection point can have one octahedral gap as well as 2 tetrahedral courtyards, so the close-packed hexagonal framework contains a total amount of 6 octahedral courtyards. To preserve electric nonpartisanship, just 2 Cr2 sets of three o7. Just two-thirds of the octahedral space is occupied by chromium ions. CP+can only fill two-thirds of the octahedral empty yards according to the composition proportion.

Use chromium oxide Oxides consisting of Cr.Y.ZrAl and also

other energetic elements can substantially boost the high-temperature oxidation resistance of the alloy due to the fact that these active elements and also their oxides can significantly lower the important content of oxidized elements needed for selective oxidation of the alloy. The experiment reveals that the oxidation resistance of the alloy is increased by 3 times after the slim layer of CnO3 -Y203 is transferred externally of 1Cr18Ni9Ti. Rate of chromium oxide Chromium oxide fragment

dimension as well as pureness will certainly impact the product ' s cost,

as well as the purchase quantity can also affect the price of chromium oxide. A large quantity of big amount will be lower. The rate of chromium oxide can be discovered on our company ' s main site. Chromium oxide provider Mis-asia Technology Co. Ltd.(Mis-asia)Luoyang City, Henan District, China, is a reliable and

top quality global chemical product vendor as well as supplier. It has more than 12 years of experience giving ultra-high high quality chemicals and also nanotechnology products, including chromium oxide, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are trying to find top notch and economical chromium oxide, you are welcome to call us or ask any time.

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