Sodium silicate from rice husk ash was functionalized with different silylating agents to produce silica with -CH2-Cl (labelled as RHACCl), -CH2-NH2 (labelled as RHAPrNH2) and -CH2-SH (labelled as RHAPrSH) end groups via a novel one-pot synthesis. Saccharine (Sac) and Melamine (Mela) were immobilized onto RHACCl to form RHAC-Sac and RHAPrMela. The functionalized -CH2-SH group in RHAPrSH was oxidized to sulfonic acid, -CH2-SO3H (labelled as RHAPrSO3H) with hydrogen peroxide at room temperature. The catalysts showed good textural and structural properties. RHAC-Sac, RHAPrMela, RHAPrSO3H, RHA-Blank (as control) as well as homogenous Sac and homogenous Mela were used as catalysts in the esterification reaction. The catalytic activity was found to follow the sequence: RHAPrSO3H > RHAPrMela > homogenous Sac > RHAC-Sac > homogenous Mela > RHA-Blank. The catalysts were easily regenerated and could be reused several times without loss of catalytic activity.
Sodium silicate from rice husk ash was functionalized with different silylating agents to produce silica with -CH2-Cl (labelled as RHACCl), -CH2-NH2 (labelled as RHAPrNH2) and -CH2-SH (labelled as RHAPrSH) end groups via a novel one-pot ...
An introduction to premenstrual syndrome examines the causes, symptoms, and treatment of this problem, which affects a large percentage of menstruating women to a mild or severe degree
An introduction to premenstrual syndrome examines the causes, symptoms, and treatment of this problem, which affects a large percentage of menstruating women to a mild or severe degree
On the management of ecotourism in Jakarta.
On the management of ecotourism in Jakarta.
Apakah Anda ingin lulus tes TNI atau POLRI? Baik sebagai Taruna, AKPOL, SIPSS, Brigadir Polisi, Tamtama, Perwira PK TNI, Perwira PSDP, Penerbang TNI, Beasiswa TNI, Akmil, AAL, AAU, Bintara AD, Bintara AL, Tamtama AD, Tamtama AL, Tamtama AU, Sekolah kedinasan. Apakah Anda sudah mempersiapkan semuanya dengan baik, terutama untuk mengikuti tes masuk? Buku ini memberikan panduan lengkap untuk Anda bias mempersiapkan tes masuk dengan sempurna. Buku yang syarat informasi mengenai tes masuk TNI-POLRI ini disajikan secara praktis dan to the point. Buku ini tidak hanya memberikan soal-soal yang keluar dalam tes masuk TNI-POLRI, tetapi juga disediakan panduan latihan fisik, software tes buta warna, panduan pendaftaran online dan CAT (Computer Asisted Test) yang dibutuhkan para calon TNI-POLRI yang akan mengikuti tes.
Yati kalah pandai daripada Tina, tapi Tina sama pandainya dengan Tatik, Tatik
lebih pandai daripada Yati. a. Tina lebih pintar dari pada Rita. b. Tatik lebih
pandai daripada Yati. c. Rita sama pandainya dengan Yati. d. Tina yang paling.
159.
On school based on multiple intelligences in Indonesia.
On school based on multiple intelligences in Indonesia.
Amir M. S.. PANORAMA ALAM MINANGKABAU ESTETIKA ALAM
MINANGKABAU RANAH MINANG Merapi dan Singgalang bersanding dua Sago
dan Tandikat. 129 PANORAMA ALAM MINANGKABAU.
Views on the All-Indonesia Muslim Intellectuals' Association; collection of articles by non-members.
New York: Farrar, Straus & Giroux, cetakan ketiga Susanto, Budi, SJ, 1992 "Etika
komunikasi: Taktik Media Massa, " dalam Nilai-nilai Etis dan Kekuasaan Utopis.
Seri Siasat Kebudayaan. Yogyakarta: Kanisius & Lembaga Study Realino , 1992
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