Table 3.

Experimental Henry constants (K′), adsorption enthalpies, and adsorption entropies of the butene isomers on zeolite Y.22

Compound	Experimental			Calculated
	K′ [mol kg−1 Pa−1] (170 °C)	Δ$H\genfrac{}{}{0pt}{}{\ominus }{0}$ [kJ mol−1]	Δ$S\genfrac{}{}{0pt}{}{\ominus }{0}$ [kJ mol−1]	Δ$H\genfrac{}{}{0pt}{}{\ominus }{0}$ [kJ mol−1][a]
isobutene	1.41×10−4	−49.0±0.6	−80.0
1‐butene	1.15×10−4	−48.9±0.3	−81.2	−60.5
cis‐2‐butene	1.26×10−4	−49.0±0.2	−80.9	−60.8
trans‐2‐butene	1.01×10−4	−48.7±0.4	−81.9	−59.0
n‐butene	3.19×10−5	−37.1±0.1	−67.3	−51.5

[a] Results from Ref. 38.