In　this　study,　Al2O3-loaded　expanded　vermiculite　(aEV/AO)　with　improved　adsorption　capacity　and　thermal　conductivity　was　reported　as　the　lauric-myristic-stearic　acid　eutectic　mixture　(LA-MA-SA)　supporting　matrix.　The　Al2O3-loaded　expanded　vermiculite　was　prepared　by　acid　treating　expanded　vermiculite　(aEV)　followed　by　loading　Al2O3　particles.　The　thermal　conductivity　of　LA-MA-SA/aEV/AO　was　0.671 W/m K,　which　was　156.1%,　30.8%　and　37.5%　higher　than　that　of　LA-MA-SA,　LA-MA-SA/EV　and　LA-MA-SA/aEV,　respectively.　The　latent　heats　of　LA-MA-SA/aEV/AO　were　113.7 J/g　at　the　melting　temperature　of　28.6 °C　and　108.5 J/g　at　the　freezing　temperature　of　26.9 °C,　which　were　also　higher　than　those　of　LA-MA-SA/EV　and　LA-MA-SA/aEV.　The　results　of　the　thermo-gravimetric　analysis,　thermal　cycling　test　and　Fourier　transform　infrared　spectroscopy　indicated　that　the　LA-MA-SA/aEV/AO　composite　PCM　was　thermally　stable　and　chemically　inert.　Thus,　LA-MA-SA/aEV/AO　is　a　preferential　potential　thermal　energy　material　for　the　improving　the　energy　efficiency　in　building　applications　due　to　its　proper　phase　change　temperature　range,　relatively　high　latent　heat　and　thermal　conductivity,　good　thermal　reliability　and　chemical　stability.　©　2017　Elsevier　B.V.