Hi, everyone.

I want to use sorption module to calculate propane uptake on zeolites. 

When i see paper, they set the effective Lennard-Jones interaction parameters. 

for example, CH2(sp3)-CH2(sp3) ε/KΒ = 56.0 K, σ = 3.96 Å; CH3(sp3)-CH3(sp3) ε/KΒ ) 108.0 K, σ = 3.76 Å.

How can i set this value in MS? 

Thanks a lot.