A commercial version of {TAIL ~ 8% Na2} O promoted alumina has an HCl capacity of 12.9% and 1,3 butadiene reactivity of 5.7% By gradually increasing the amount of {HEAD ~ water} pre loaded on the adsorbent, a steady increase in HCl adsorption capacity and a steady decrease in 1,3 butadiene reactivity was observed with a water pre loading of from about 5 to about 11 weight percent of the adsorbent relative to the adsorbent on an essentially water free basis 
A commercial version of { TAIL ~ 8 % Na2 } O promoted alumina has an HCl capacity of 12.9 % and 1,3 butadiene reactivity of 5.7 % By gradually increasing the amount of { HEAD ~ water } pre loaded on the adsorbent , a steady increase in HCl adsorption capacity and a steady decrease in 1,3 butadiene reactivity was observed with a water pre loading of from about 5 to about 11 weight percent of the adsorbent relative to the adsorbent on an essentially water free basis
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