Utilization of Natural Zeolite Catalyst Impregnated Sn Metal in Glucose Isomerization with Temperature Variations

Pamungkas, Dwi Putri Woro and Amalia, Suci and Abtokhi, Ahmad and Khalifah, Susi Nurul (2015) Utilization of Natural Zeolite Catalyst Impregnated Sn Metal in Glucose Isomerization with Temperature Variations. Alchemy, 4 (1). pp. 79-87. ISSN 2086-1710

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Abstract

Studied the characteristics of natural zeolite catalysts activated and modifications and catalytic activity in the isomerization of glucose. Natural zeolite was activated by NH4NO3 2 M obtained catalyst HZA. While modification using 0,24 M Sn metal impregnated on HZA obtained catalyst Sn-HZA. At this stage, hydrothermal process carried out at temperature of 90 °C for 12 hours followed by calcination at temperature of 500 °C for 4 hours. The characterization includes the XRD analysis, SEM-EDAX analysis, acidity by ammonia method, and surface area by adsorption of methylene blue method. Glucose conversion was obtained through analysis of polarimeter at hour-0, 1, 2, 3, and 4 with temperature variation of 110, 120, and 130 °C. Solution which had the highest conversion resulted by polarimeter was analyzed by HPLC. XRD analysis showed that there were no changes in the structure of zeolite after activation and modification process. SEM-EDAX analysis showed that morphology of the zeolite surface is not damaged and Sn metal was successfully impregnated 6,94 %. The activity of HZA and Sn-HZA was 1,4850 mmol/g and 2,3145 mmol/g. while the surface area of HZA and Sn-HZA was 11,4077 m2/g and 11,4738 m2/g. Using the Sn-HZA catalyst with the reaction temperature of 120 °C provides the highest conversion of glucose and fructose selectivity. It were 14,0733 % w/v and 0,646 % w/v.

Telah dipelajari karakteristik katalis zeolit alam teraktivasi dan modifikasi serta aktivitas katalitiknya pada reaksi isomerisasi glukosa. Zeolit alam diaktivasi menggunakan NH4NO3 2 M menghasilkan katalis HZA. Sedangkan modifikasi menggunakan logam Sn 0,24 M yang diimpregnasikan pada HZA menghasilkan katalis Sn-HZA. Pada tahap tersebut dilakukan proses hidrotermal dengan suhu 90 ºC selama 12 jam dilanjutkan kalsinasi dengan suhu 500 ºC selama 4 jam. Karakterisasi meliputi analisis XRD, SEM-EDAX, analisis keasaman metode adsorpsi amoniak dan analisis luas permukaan metode adsorpsi methylene blue. HZA dan Sn-HZA diaplikasikan pada reaksi isomerisasi glukosa dengan metode batch. Konversi glukosa diperoleh melalui analisis polarimeter pada setiap jam ke-0, 1, 2, 3 dan 4 dengan variasi suhu 110, 120 dan 130 °C. Larutan hasil analisis polarimeter yang menghasilkan konversi terbesar dianalisis dengan HPLC. Analisis XRD menunjukkan bahwa tidak terjadi perubahan struktur pada zeolit setelah proses aktivasi dan modifikasi. Analisis dengan SEM-EDAX menunjukkan bahwa morfologi permukaan zeolit tidak rusak dan logam Sn yang berhasil diipregnasikan sebesar 6,94 %. Keasaman HZA dan Sn-HZA yang diperoleh sebesar 1,4850 mmol/gr dan 2,3145 mmol/gr. Sedangkan luas permukaan H-ZA dan Sn-HZA sebesar 11,4077 m2/gr dan 11,4738 m2/gr. Penggunaan katalis Sn-HZA dengan suhu reaksi 120 °C dapat memberikan konversi glukosa dan selektivitas fruktosa terbesar yaitu 14,0737 % b/v dan 0,646 % b/v.

Item Type: Journal Article
Keywords: Katalis; glukosa; isomerisasi; zeolit Alam; logam Sn
Subjects: 03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030207 Transition Metal Chemistry
03 CHEMICAL SCIENCES > 0305 Organic Chemistry > 030503 Organic Chemical Synthesis
Divisions: Faculty of Mathematics and Sciences > Department of Chemistry
Depositing User: Mrs Suci Amalia
Date Deposited: 24 Sep 2019 12:57

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