A commercial version of 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 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 {HEAD ~ the adsorbent} relative to {TAIL ~ the adsorbent} on an essentially water free basis 
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A commercial version of 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 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 { HEAD ~ the adsorbent } relative to { TAIL ~ the adsorbent } on an essentially water free basis
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