image: This is a figure illustrating the relevant length scales in Fluid Catalytic Cracking of crude oil fractions. This material relates to a paper that appeared in the April 3, 2015, issue of Science, published by AAAS. The paper, by F. Meirer at Utrecht University in Utrecht, Netherlands, and colleagues was titled, "Life and death of a single catalytic cracking particle." view more
Credit: [Credit: Utrecht University]