?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+SUHU+KALSINASI+TERHADAP+KARAKTERISTIK+KOMPOSIT+MgO-SiO2+BERBASIS+SILIKA+SEKAM+PADI&rft.creator=VININDIA+KUSUMA%2C+0817041012&rft.subject=+&rft.description=ABSTRAK+%0D%0A%0D%0AKomposit+MgO-SiO2+disintesis+dari+larutan+MgNO3.6H2O+dan+silika+sekam+padi.+Hasil+analisis+SEM+pada+suhu+700oC+menunjukkan+terbentuknya+gumpalan+(cluster)+yang+berukuran+tidak+sama+dan+memiliki+ukuran+pori+yang+cukup+besar+sedangkan+pada+suhu+800oC+dan+900oC+menunjukkan+terbentuknya+butiran+kristal+MgO+dan+berukuran+tidak+sama.+Adanya+peningkatan+suhu+kalsinasi+morfologi+permukaan+mengalami+perubahan%2C+diantaranya+pori-pori%2C+ukuran+maupun+bentuk+butiran+yang+terdistribusi+pada+permukaan.+Hasil+EDS+memperlihatkan+senyawa+oksigen%2C+potasium%2C+sulfur%2C+karbon%2C+silikon+dan+magnesium.+Hasil+karakterisasi+XRD+menunjukkan+pada+suhu+kalsinasi+700oC+terbentuk+fasa+silicon+oxide+dan+magnesium+silika.+Sedangkan+pada+suhu+kalsinasi+800oC+dan+900oC+terbentuk+fasa+cristobalit%2C+periclase%2C+forsterite+dan+pottasium%2C+dimana+dengan+meningkatnya+suhu+kalsinasi+semakin+besar+derajat+kristalinitas+bahan.+Hasil+karakterisasi+luas+permukaan+menunjukkan+komposit+MgO-SiO2+pada+suhu+kalsinasi+700oC+hasil+adsorpsi+yaitu+%3D+141+nm+dan+desorpsi+%3D+30%2C813+nm+sedangkan+pada+suhu+kalsinasi+800oC+hasil+absorpsi+diperoleh+diameter+pori+%3D+7%2C669+nm+dan+desorpsi+%3D+3%2C812+nm%2C+sehingga+sampel+komposit+MgO-SiO2+berukuran+mesopori.+Berdasarkan+hasil+uji+aktivitas+yang+meliputi+konversi+sampel+dengan+perbandingan+1%3A1+dan+suhu+kalsinasi+800oC+memiliki+nilai+tertinggi+yaitu+90%2C7%25+dan+viskositas+terendah+yaitu+11%2C7672+mm2%2Fs.+Hasil+GCMS+menghasilkan+senyawa+utama+metil+laurat%2C+metil+miristat+dan+metil+palmitat+sebagai+komponen+biodiesel+yang+dihasilkan+dari+minyak+kelapa.%0D%0AKata+kunci%3A+Komposit%2C+MgO-SiO2%2C+Silika%2C+Sekam+padi.%0D%0Aiii%0D%0AABSTRACT+THE+EFFECT+OF+CALCINATION+TEMPERATURE+ON+CHARACTERISTICS+MgO-SiO2+COMPOSITE+BASED+ON+RICE+HUSK+SILICA+By+VININDIA+KUSUMA+MgO-SiO2+composites+were+synthesized+from+solution+MgNO3.6H2O+and+rice+husk+silica.+SEM+analysis+results+at+a+temperature+of+700%C2%B0C+showed+the+formation+of+a+clot+(cluster)+did+not+the+same+size+and+have+a+large+enough+pore+size+while+at+a+temperature+of+800oC+and+900oC+showed+the+formation+of+crystalline+grains+of+MgO+and+did+not+the+same+size.+An+increase+in+the+calcination+temperature+of+the+surface+morphology+changed%2C+such+as+pores%2C+grain+size+and+shape+were+distributed+on+the+surface.+The+EDS+results+showed+oxygen+compounds%2C+potassium%2C+sulfur%2C+carbon%2C+silicon+and+magnesium.+XRD+characterization+results+indicated+the+calcination+temperature+of+700%C2%B0C+phase+formed+silicon+oxide+and+magnesium+silica.+Whereas+at+800oC+and+900oC+calcination+temperature+phase+formed+cristobalit%2C+periclase%2C+forsterite+and+potassium%2C+which+with+increasing+calcination+temperature+the+degree+of+crystallinity+of+the+material+was+greater.+Characterization+results+showed+the+surface+area+composite+MgO-SiO2%2C+the+calcination+temperature+at+700%C2%B0C+was+resulted+adsorption+%3D+141+nm+and+desorption+%3D+30.813+nm%2C+while+the+calcination+temperature+at+800oC+absorption+results+obtained+pore+diameter+%3D+7.669+nm+and+desorption+%3D+3.812+nm%2C+so+the+MgO-SiO2+composite+sample+size+mesoporous.+Based+on+the+results+of+activity+test+with+a+sample+that+includes+the+conversion+ratio+of+1%3A1+and+calcination+temperature+of+800oC+has+the+highest+value+of+90.7%25+and+a+low+viscosity+of+11.7672+mm2%2Fs.+GCMS+results+produced+major+compounds+methyl+laurate%2C+methyl+myristate+and+methyl+palmitate+as+a+component+of+biodiesel+produced+from+palm+oil.%0D%0AKey+words%3A+Composite%2C+MgO-SiO2%2C+Silica%2C+Rice+husk.&rft.publisher=FAKULTAS+MIPA&rft.date=2013-04-09&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F1%2FC.ABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F2%2FA.COVER.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F3%2FB.COVER2.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F4%2FE.LEMBAR%2520PENGESAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F5%2FF.MENGESAHKAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F6%2FG.PERNYATAAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F7%2FH.RIWAYAT%2520HIDUP.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F8%2FI.MOTTO.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F9%2FJ.PERSEMBAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F10%2FSANWACANA.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F11%2Fl.%2520DAFTAR%2520ISI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5641%2F1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