?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=SINTESIS+DAN+KARAKTERISASI+CaO%2FSiO2+DARI+BATU+KAPUR+DAN%0D%0ABATU+APUNG+UNTUK+DIGUNAKAN+SEBAGAI+KATALIS%0D%0ATRANSESTERIFIKASI+MINYAK+KELAPA&rft.creator=%09Zulfa%2C++Nirmala&rft.subject=500+ilmu+pengetahuan+alam+dan+matematika&rft.subject=540+Kimia+dan+ilmu+yang+berhubungan&rft.description=Ketersediaan+minyak+bumi+yang+semakin+terbatas+membuat+perhatian+masyarakat%0D%0Aterhadap+sumber+energi+alternatif+semakin+tinggi.+Salah+satu+sumber+energi%0D%0Aalternatif+yang+dapat+digunakan+adalah+biodiesel+karena+bersifat+ramah+lingkungan%0D%0Adan+renewable.+Biodiesel+dapat+dihasilkan+dari+proses+transesterifikasi+minyak%0D%0Anabati+dengan+alkohol+dan+umumnya+menggunakan+bantuan+katalis+untuk%0D%0Amempercepat+laju+reaksi.+Dalam+penelitian+ini+telah+dilakukan+sintesis+katalis%0D%0ACaO%2FSiO2+dari+batu+kapur+dan+silika+batu+apung+dengan+komposisi+massa+1%3A5+serta%0D%0Aaplikasinya+sebagai+katalis+reaksi+transesterifikasi+minyak+kelapa+dengan+metanol.%0D%0AKarakterisasi+katalis+menggunakan+XRF+telah+mengidentifikasi+bahwa+komposisi%0D%0Akatalis+terdiri+dari+SiO2+sebesar+82%2C507%25+dan+CaO+sebesar+11%2C468%25.+Analisis%0D%0ASEM+telah+mengidentifikasikan+morfologi+permukaan+katalis+terdapat+gumpalan%0D%0A(cluster)+yang+memiliki+ukuran+tidak+seragam+yang+dikelilingi+oleh+agregat+kecil.%0D%0AKarakterisasi+BET+menunjukkan+luas+permukaan+spesifik+katalis+dan+total+volume%0D%0Apori+yaitu+berturut-turut+sebesar+14%2C9617+m2%0D%0A%2Fg+dan+0%2C0163+cc%2Fg.+Karakterisasi+PSA%0D%0Amenghasilkan+nilai+ukuran+partikel+katalis+yaitu+rata-rata+sebesar+49%2C65+%C2%B5m.+Hasil%0D%0Atransesterifikasi+menunjukkan+bahwa+katalis+dengan+unjuk+kerja+terbaik+pada%0D%0Anisbah+metanol+terhadap+minyak+8%3A1%2C+jumlah+katalis+10%25%2C+dan+waktu+reaksi+30%0D%0Amenit+pada+suhu+70+%E2%84%83+dan+didapatkan+persen+konversi+sebesar+75%25.+Hasil+analisis%0D%0Adengan+GC-MS+menunjukkan+bahwa+biodiesel+didominasi+metil+laurat+yang%0D%0Aberasal+dari+asam+laurat+sebagai+kandungan+utama+dalam+minyak+kelapa.%0D%0AKata+kunci%3A+biodiesel%2C+transesterifikasi%2C+metode+sol+gel%2C+katalis+CaO%2FSiO2%2C+batu%0D%0Akapur%2C+silika+batu+apung%0D%0ADepletion+of+petroleum+reserves+has+gained+great+attentions+towards+alternative%0D%0Aenergy+sources.+One+such+alternative+fuels+that+can+be+used+is+biodiesel+due+to+its%0D%0Aenvironmental+benignity+and+renewability.+Biodiesel+is+derived+from+vegetable%0D%0Aoils+through+transesterification+reaction+with+alcohol+using+a+catalyst+to+accelerate%0D%0Athe+reaction.+In+this+research%2C+CaO%2FSiO2+catalyst+was+successfully+synthesized+from%0D%0Alimestone+and+pumice+with+1%3A5+mass+ratio%2C+and+its+application+for+catalyst%0D%0Atransesterification+reaction+of+coconut+oil+with+methanol.+XRF+characterization+of%0D%0Acatalyst+revealed+that+the+catalyst+consists+of+82.507%25+SiO2+and+11.468%25+CaO.%0D%0ASEM+analysis+of+catalyst+showed+that+the+surface+of+the+sample+is+marked+by%0D%0Aclusters+of+particles+with+irregular+forms+surrounded+by+small+aggregates.+BET%0D%0Acharacterization+indicates+the+specific+surface+area+of+the+catalyst+and+total+pore%0D%0Avolume+are+14.9617+m2%0D%0A%2Fg+and+0.0163+cc%2Fg%2C+respectively.+PSA+characterization%0D%0Arevealed+an+average+catalyst+particle+size+which+is+49.65+%C2%B5m.+The+results+of+the%0D%0Atransesterification+reaction+revealed+that+best+catalytic+activity+at+the+ratio+of%0D%0Amethanol+to+oil+of+8%3A1%2C+the+amount+of+catalyst+10%25%2C+the+reaction+time+30+minutes+at%0D%0A70+%C2%B0C+and+the+highest+oil+conversion+was+75%25.+The+results+of+the+GC-MS+analysis%0D%0Ashowed+that+biodiesel+dominated+by+methyl+laurate%2C+which+originates+from+lauric%0D%0Aacid+as+the+main+component+of+coconut+oil.%0D%0AKeywords%3A+biodiesel%2C+transesterification%2C+sol+gel+method%2C+CaO%2FSiO2+catalyst%2C%0D%0Alimestone%2C+pumice+silica.&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM+&rft.date=2024-07-08&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F87399%2F1%2FABSTRAK%2520ZULFA%2520NIRMALA-1817011060%2520-%2520Zulfa%2520Nirmala.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F87399%2F2%2FSKRIPSI%2520ZULFA%2520NIRMALA-1817011060-FULL%2520-%2520Zulfa%2520Nirmala.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F87399%2F3%2FSKRIPSI%2520ZULFA%2520NIRMALA-1817011060-TANPA%2520PEMBAHASAN-Rev%2520-%2520Zulfa%2520Nirmala.pdf&rft.identifier=+++Zulfa%2C+Nirmala++(2024)+SINTESIS+DAN+KARAKTERISASI+CaO%2FSiO2+DARI+BATU+KAPUR+DAN+BATU+APUNG+UNTUK+DIGUNAKAN+SEBAGAI+KATALIS+TRANSESTERIFIKASI+MINYAK+KELAPA.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM+%2C+UNIVERSITAS+LAMPUNG+.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F87399%2F