A study on the adsorption characteristics of the adsorption refrigeration working pairs using strontium chloride and activated carbon as adsorbents and ammonia as refrigerant was performed.The strontium chloride adsorbent particles had a lower strength which would cause them to swell and smash after a period of working time. In addition

the heat and mass transfer characteristics of the adsorption bed would deteriorate.To solve these problems

activated carbon and calcium sulfate were added and mixed to the strontium chloride with a mass ratio 20%

separately.The adsorption mechanism of strontium chloride and gelation of calcium sulfate were also discussed.The adsorption refrigeration experimental results showed that the control factor was temperature.For example

the refrigeration capacity of the unit adsorbent of strontium chloride/activated carbon and strontium chloride/calcium sulfate were 2.1 times and 1.4 times higher than that of strontium chloride at 100℃

respectively.BET（Brunauer-Emmett-Teller）specific surface area and pore structure of adsorbents were examined.The results showed that the BET specific surface area and pore structure of SrCl2/CaSO4 were kept at the same level

and the BET specific surface area of SrCl2/activated carbon increased greatly and its pore structure was improved.