Preparation of perlite-based magnesium perchlorate desiccant with colour indicator.
A new desiccant consisting of magnesium perchlorate, expanded perlite and metal chelate was prepared. The performance tests show that the desiccant is superior to magnesium perchlorate desiccant in dehydration efficiency, absorption capacity for water, flow resistance, color indicator and regeneration. It can reduce the amount of water in gases to approximately 0.7 ppm(v/v). Its applications in gas analysis and purification were investigated.
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Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai, 200050, P.R. China.
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