This　article　describes　a　simple　but　effective　method　to　dealuminate　and　realuminate　H-Beta　zeolite　as　a　catalyst　for　removing　organic　acids　from　bio-oils　via　their　esterification　reactions　with　alcohols.　A　series　of　modified　Beta　zeolites　were　prepared　by　mechanically　mixing　an　oxalic　acid　leached　Beta　zeolite　with　different　amounts　of　solid-phase　aluminum　fluoride　(AlF　3　)　and　calcinating　the　resulting　mixtures.　The　structure,　texture　property,　and　acidity　of　the　oxalic　acid　leached　Beta　zeolite　can　be　finely　adjusted　by　simply　changing　the　amount　of　AlF　3　used.　Dealumination　and　realumination　could　simultaneously　take　place　via　the　interaction　of　Beta　zeolite　with　AlF　3　when　the　content　of　AlF　3　was　between　1.5　and　3.0　wt　%.　Only　dealumination　happened　when　the　content　of　AlF　3　was　lower　than　1.0　wt　%　or　higher　than　4.0　wt　%.　The　catalytic　activities　for　esterification　reaction　of　sec-butanol　and　acetic　acid　showed　that　the　modified　Beta　zeolite　with　a　suitable　amount　of　AlF　3　exhibited　much　higher　selectivity　than　the　oxalic　acid　leached　H-Beta　zeolite.　©　2018　American　Chemical　Society.