What Is Cu SSZ-13?

What is Cu SSZ-13 Molecular Sieve ?

Q: What is Cu SSZ-13 molecular sieve and what is its role in SCR catalyst?
A: Cu SSZ-13 molecular sieve is a type of zeolite molecular sieve containing copper ions. It is widely used in selective catalytic reduction (SCR) catalysts, as it has excellent catalytic properties for the reduction of nitrogen oxides (NOx) in exhaust gases from diesel engines.

Q: How does Cu SSZ-13 molecular sieve work in SCR catalyst?
A: In SCR catalysts, the Cu SSZ-13 molecular sieve acts as a catalyst for the reduction of NOx, which are harmful pollutants emitted by diesel engines. When exhaust gases containing NOx pass through the SCR catalyst, ammonia (NH3) is injected into the exhaust stream, and the Cu SSZ-13 catalyst helps to convert the NOx and NH3 into harmless nitrogen gas (N2) and water vapor (H2O). This chemical reaction occurs at a high efficiency and can reduce NOx emissions by up to 90%.

Q: What are the benefits of using Cu SSZ-13 molecular sieve in SCR catalysts?
A: The use of Cu SSZ-13 molecular sieve in SCR catalysts has several benefits.

Firstly, it has high catalytic activity for the reduction of NOx, resulting in high efficiency of pollution control.

Secondly, it has excellent thermal stability and can withstand high temperatures without losing its catalytic activity, which is important for reliable operation of the SCR catalyst.

Thirdly, it has a high resistance to sulfur poisoning, which can be a common problem in SCR catalysts due to the presence of sulfur in diesel fuel. Overall, the use of Cu SSZ-13 molecular sieve in SCR catalysts is an effective and sustainable solution for reducing diesel engine emissions.