I’ve been studying *catalysis lately, and I have a few questions for my friends regarding National VI standards!

Thread Content

1. What are the precious metals used in catalysts? Besides platinum, which others are there? Why are precious metals added to reduce the olefin content in gasoline? 2. What methods are available in catalytic processes to reduce the olefin content? 3. Why can short contact time, a low oil-to-fuel ratio, and low temperature all reduce the benzene content in the National VI standard? 4. Why is it said that a high oil-to-fuel ratio and high space velocity achieve the same results as a low oil-to-fuel ratio and low space velocity? I know a bit about this, but it always seems like there’s something missing in the process. The level drops from 550T to 110; in reality, when accelerating the steam flow for 50T, it’s necessary to keep it below 95. Is there any good way to do this? From the reaction stage to distillation, everyone out there, please stop staying silent – let’s learn together! ! ! ! ! ! ! ! ! ! ! ! ! !