Use of organic framework porous solid acid

A catalyst of organic framework porous solid acid, wherein said catalyst is effective as a catalyst for catalytic esterification and acylation reactions, wherein the synthesis of said catalyst comprises:

• (1) divinyl benzene monomer is added into a mixture solvent of azobisisobutyronitrile, tetrahydrofuran and water, which is stirred for more than 3 hours at ambient temperature and pressure followed by hydrothermal treatment for 1-2 days, then the obtained product is taken out, opened and volatilized at the room temperature to obtain polydivinylbenzene having mesoporous structure;
• (2) polydivinylbenzene is ground into 200-mesh powder and degassed for 10 h under nitrogen condition;
• (3) polydivinylbenzene blocks are added into 1,1′,2-trichloroethane, then the polydivinylbenzene blocks rapidly swell, explode and crack into small blocks accompanied by rapid volume expansion;
• (4) 1,1′,2-trichloroethane is mixed homogenously with concentrated sulphuric acid with silver sulfate being added as a catalyst, the mixture is then stirred uniformly followed by adding processed polydivinylbenzene obtained from (3) with severe agitation at the temperature of sulfonation for 12 h, the product is filtered and washed with dioxane and then washed with water till neutral, dried at 80° C., subsequently activated by 0.1 M dilute sulphuric acid for 4 hours, then washed with quantity of water until neutral, and finally dried.