Happy two toke Tuesday, starting at 63F and 77% RH around cheer, and predicted to reach 71F.
Some quality time spent researching mol sieve and the math as well as ion exchange beads. Alas I found that butane and diethanolamine are very close to the same size molecule at 6.74 and 6.75 Angstroms respectively, and propane is close at 6.19 Angstroms. That will make it difficult to remove one and leave the other using Mol Sieve.
In addition, Mol Sieve doesn't come in 7 Angstrom pores, only 3, 4, 5, and 10 Angstrom. Interestingly the spec sheet for 13X shows it as being used for removal of oxygenates from hydrocarbons............
Dinner out with old friends that are about a decade older than me. He was the old guard when I was hired at the last corporation that I worked for and still operates his own aerospace consulting business and a vineyard at almost 90.