Rare earth co-catalytic materials

rare earth element

Rare earth elements have a special outer electronic structure (4f), which acts as the central atom of the network and has a variety of coordination numbers ranging from 6 to 12. The variability of the coordination number of rare earth elements determines their “residual atomic value”. Because 4f has seven back-up electron orbitals with bonding ability, it plays the role of some kind of “back-up chemical bond” or “residual atomic valence”, which is exactly what a catalyst must have.

Rare earth catalyst properties

Rare earth elements not only have catalytic activity in their own right, but can also be used as additives or co-catalysts to improve the catalytic performance of the catalyst, especially the resistance to aging and poisoning. Rare-earth catalytic materials include molecular sieve rare-earth catalytic materials, rare-earth calcium titanium ore catalytic materials, cerium zirconium solid solution catalytic materials, etc. These materials can be used for catalytic cleanup of exhaust gases from internal combustion engines, cleanup of exhaust gases from factories and human environments, catalytic combustion, fuel cells, and utilization of low-value alkanes.

Cerakium-zirconium-based solid solutions

Zirconium ceria-based solid solution has excellent oxygen storage and emission functions, and is one of the important components of triple-acting catalysts (TWCs), which not only plays a role in regulating the air-fuel ratio during the catalytic reaction, but also serves as a catalyst carrier, which effectively improves the catalytic activity and resistance to sintering of precious metal catalysts, and significantly improves the clean-up efficiency of hazardous gases, such as hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx), in the exhaust of automobiles and factory waste gases.

Rare earth-zirconium composite carrier coating materials

Rare earth-zirconium composite carrier coatings with stable specific surface area and uniform particles can be used for motor vehicle exhaust purification, natural gas catalytic combustion, factory exhaust treatment, indoor air purification, and flow-through catalytic cracking in oil refineries. The use of rare earth-zirconium composite carrier coatings reduces the amount of precious metals used and significantly lowers the production cost of catalytic cleaners for manufacturing companies without compromising the purification effect.

Characteristics of rare earth-zirconium composite carrier coatings:

The composition is scientifically rational: Cerium oxide and zirconium oxide solids are used as the base, partially doped with plutonium oxide and plutonium oxide, which gives the product an optimal oxygen storage capacity and a stable specific surface area.
Stable aging specific surface area: By controlling the porosity and pore size, the coating material has a large and stable specific surface area, which increases the durability of the catalytic gas.
Fine particles and uniform distribution: The use of grinding and precision grading technology ensures that the material does not settle during the coating process and improves product consistency.

Rare earth oxygen storage materials have many advantages such as excellent oxygen storage capacity, faster oxygen storage/release rate, lower ignition point and higher heat stability. It also can promote the dispersing of precious metals, reducing the quantity of the precious metal, improving the catalytic activity and extending life time of the catalyst. This product can be applied in many areas, including automobile and motorcycle exhaust gas purification, catalytic combustion, industrial waste gas treatment, etc.

Dedicated to gasoline vehicles and their three-way catalytic converters, rare earth catalyst materials are present in catalytic converters worldwide today. Our product range reduces usage of precious metals whilst simultaneously improving catalytic converter performance and durability.

Coating material with RE-zirconium composite carrier has a perfect surface area stability, particles uniformity and other characteristics. It can be used in purification catalyst of vehicle exhaust gas, catalytic combustion of natural gas, the treatment of industrial waste gas, the purification of indoor air, as well as the oil refining industry in Sulfide catalytic cracking. RE-zirconium composite carrier coating materials can reduce the dosage without damaging purification effect, at the same time, significantly reducing relative enterprise costs.

Product Model

	Type	Apprearance	Compisition	Performance Indicators			Application
	Type	Apprearance	Compisition	BET FS/m₂/g	BET AS/m₂/g	grit D50/µm	Application
Highly active rare earths Oxygen storage material	RC-LY-25	Yellow Powder	La₅Y₅Ce₆₀Zr₃₀	60~110	20~30	3±0.5	Cerium-zirconium-based solid solutions have excellent oxygen storage and release functions, and are one of the important components of triple-acting catalysts (TWCs), which play a role in regulating the air-fuel ratio during the catalytic reaction, and at the same time, as a catalyst carrier, effectively improve the catalytic activity and anti-sintering of precious metal catalysts, which can significantly increase the catalytic clean-up efficiency of hazardous gases, such as hydrocarbons (HCs), carbon monoxide (CO), and nitrogen oxides (NOx), in automobile exhausts and factory wastewaters. It also can promote the dispersing of precious metals, reducing the quantity of the precious metal, improving the catalytic activity and extending life time of the catalyst. This product can be applicated in many area, including automobile and motorcycle exhaust gas pruification, catalytic combustion, industrial waste gas treatment, etc.
	RC-LY-35	Yellow Powder	La₅Y₅Ce₃₀Zr₆₀	60~110	25~35	3±0.5
	RC-PN-35	Brown Powder	Pr₇Nd₇Ce₂₈Zr₅₈	60~110	30~40	3±0.5
	RC-LN-35	Brown Powder	La_1.5Nd_5.5Ce₂₁Zr₇₂	60~110	30~40	3±0.5
	RC-LP-25	Yellow Powder	La₅Pr₅CA₄₀Zr₅₀	60~110	30~40	3±0.5
Cerium Zirconium Aluminum Composite Materials	RCA-40	Yellow Powder	Ce₂₄Zr₁₁La₅Al₆₀	≥110	≥60	3±1
	RCA-50	Yellow Powder	Ce₁₅Zr₅Al₈₀	≥130	≥95	3±1
	RCA-60	Yellow Powder	Ce₁₅Zr₅La₈₄Al₇₆	≥130	≥95	3±1
high performance Aluminum oxide	AC-50	White Powder	La-Al₂O₃	≥200	≥90	3.0~6.0
	AC-60	White Powder	La-Al₂O₃	≥200	≥90	3.0~6.0
	AC-90	White Powder	La-Al₂O₃	≥150	≥90	3.0~6.0
	AC-100	White Powder	La-Al₂O₃	≥150	≥90	3.0~6.0