The　acid-functionalized　ionic　liquid　([HSO(3)Pmim]HSO4)　was　synthesized　by　a　two-step　method.　Nuclear　magnetic　resonance　(NMR)　and　Fourier　transform　infrared　spectroscopy　(FT-IR)　show　that　the　synthesis　method　is　feasible　and　high　purity　of　ionic　liquid　can　be　obtained.　Using　[HSO(3)Pmim]HSO4　as　the　catalyst,　we　studied　the　reaction　kinetics　of　synthesizing　sec-butyl　alcohol　from　sec-butyl　acetate　and　methanol　by　transesterification　in　a　high-pressure　batch　reactor.　The　effects　of　temperature,　initial　molar　ratio　of　methanol　to　ester,　and　catalyst　concentration　on　the　conversion　of　sec-butyl　acetate　were　studied.　Based　on　its　possible　reaction　mechanism,　a　homogeneous　kinetic　model　was　established.　The　results　show　that　the　reaction　heat　Delta　H　is　10.94　x　10(3)　J.mol(-1),　so　the　reaction　is　an　endothermic　reaction.　The　activation　energies　Ea+　and　Ea-　are　60.38　x　10(3)　and　49.44　x　10(3)　J.mol(-1),　respectively.　(C)　2014　The　Chemical　Industry　and　Engineering　Society　of　China,　and　Chemical　Industry　Press.　All　rights　reserved.