MODIFIED MESOPOROUS Γ-ALUMINA FROM KANO KAOLIN IN HETEROGENEOUS TRANSESTERIFICATION OF RICE BRAN OIL

2015 ◽  
Vol 77 (13) ◽  
Author(s):  
Abdu Muhammad Bello ◽  
Abdul Rahim Yacob ◽  
Kamaluddeen Suleiman Kabo
Keyword(s):  
Fourier Transform ◽  
Rice Bran ◽  
Fossil Fuel ◽  
Rice Bran Oil ◽  
Attenuated Total Reflection ◽  
Resonance Spectroscopy ◽  
High Catalytic Activity ◽  
Impregnation Method ◽  
Alternative Source ◽  
Infra Red

The environmental problems caused by the excessive usage of fossil fuel, prompted the need for an alternative source of energy. Renewable energy from biodiesel is one of the most promising substitutions of fossil fuel due its environmental-friendliness. In the present work NaOH-modified γ-alumina heterogeneous base catalysts were prepared using wet impregnation method, and characterized by Nitrogen Adsorption Analysis (BET), Fourier Transform Infra-Red (FTIR), X-Ray Powder Diffraction (XRD), basic back titration, and Temperature Programmed Desorption-CO2 (CO2-TPD). The catalysts were tested for the transesterification of rice bran oil with methanol, and the biodiesel product characterized by Fourier Transform Infra-Red-Attenuated Total Reflection (FTIR-ATR) and Nuclear Magnetic Resonance Spectroscopy (NMR) analyses. Catalyst synthesize with 50% NaOH was found to have the highest basic sites and when applied for the transesterification of rice bran oil it gave the highest yield of 81.2%. The high catalytic activity is attributed to the formation of NaAlO2 that is believed to contribute to the basicity of the catalyst.   

scholarly journals The Effect of CaO Weight from Snail Shell (Pilla Ampullacea) On Its Activity As Heterogeneous Catalyst on Biodiesel Conversion Of Bran Oil

2018 ◽  
Vol 18 (1) ◽  
pp. 64-73
Author(s):  
Hikmah Fatmawati ◽  
Wellyana Puspitasari ◽  
Rohini Pujiarti ◽  
Sesy Ardyanti ◽  
Is Fatimah
Keyword(s):  
Fourier Transform ◽  
Heterogeneous Catalyst ◽  
Rice Bran ◽  
Rice Bran Oil ◽  
X Ray Diffraction ◽  
Snail Shell ◽  
X Ray ◽  
Surface Basicity ◽  
Infra Red ◽  
Catalyst Effect

Research on utilization of snail (Pilla ampullacea) shell as CaO source for biodiesel conversion from rice bran oil has been investigated. CaO was derived by calcining the shell at pada 900oC for 2 h. The powder obtained from the process was characterized using x-ray diffraction (XRD),  energy dispersive x-ray (EDX), Fourier-Transform Infra-red (FTIR) and surface basicity test. In order to test the activity of catalyst, effect of catalyst weight on the yield of conversion as studied. Results show that the derived material is composed from dominantly CaO and the material demonstrates activity in rice bran conversion into biodiesel. Compared to  NaOH, the CaO catalyst exhibits more effectively active as shown by the higher yield. From varied catalyst weight, it is obtained that at the range of 2.5-10% catalyst weight does not affect significantly to the increasing yield. 

scholarly journals Trans- Free Fat Spread Produced from Rice Bran Oil and Rice Bran Oil Shortening Blends

2021 ◽  
Vol 20 (2) ◽  
Author(s):  
Pravit Santiwattana ◽  
Sirirak Siramard
Keyword(s):  
Fatty Acids ◽  
Physicochemical Properties ◽  
Oxidative Stability ◽  
Rice Bran ◽  
Trans Fatty Acids ◽  
Rice Bran Oil ◽  
Alternative Source ◽  
Thermal Behaviors ◽  
Hydrogenated Fats ◽  
Fatty Acid Compositions

The objective of this study was to produce trans-free fat spread from rice bran oil and rice bran oil shortening blends to replace partially hydrogenated fats which contain high levels of trans fatty acids. The W/O emulsion of rice bran oil spread was prepared from blending of rice bran oil and rice bran oil shortening with the mass ratio of 40: 60 using PGPR as an emulsifier. Physicochemical properties, fatty acid compositions, thermal behaviors, micronutrients, sensory attributes and oxidative stability of rice bran oil spread were investigated and compared with commercial spread products. Results showed that physicochemical properties of the rice bran oil spread were similar to the commercial spread (B2). Trans fatty acids contents of the rice bran oil spread (0.2% TFAs) were much lower than the commercial spread (F2) produced from partially hydrogenated fat (4.9% TFAs). Thermal behaviors and SFC profile indicated good physical properties and spreadability of the rice bran oil spread which were comparable to the commercial spreads. Micronutrients in the rice bran oil spread were greater than those of commercial spread products. The rice bran oil spread had the highest overall preference scores compared to the two commercial fat spreads. In addition, the rice bran oil spread exhibited high oxidative stability. This study demonstrated that rice bran oil and rice bran oil shortening blends can be used as an alternative source of partially and fully hydrogenated fats as well as tropical oils to produce trans-free fat spreads with desirable properties.

Fourier-Transform Infra Red (FTIR) Analysis of UV Curing Biobased-Polyurethane from Epoxidized Palm Oil Using Acrylation and Thiols Addition

2021 ◽  
Vol 1025 ◽  
pp. 91-96
Author(s):  
Nor Amira Binti Ahmad ◽  
Siti Noor Hidayah Binti Mustapha ◽  
Shamsul Bin Zakaria ◽  
Rasidi Bin Roslan ◽  
Tee Chuan Lee ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Palm Oil ◽  
Uv Curing ◽  
Attenuated Total Reflection ◽  
Ftir Analysis ◽  
Isophorone Diisocyanate ◽  
New Approach ◽  
Epoxidized Palm Oil ◽  
Infra Red ◽  
Biobased Polyurethane

This study is conducted to synthesis bio-polyurethane from epoxidized palm oil (EPO). Palm oil-based polyurethane was synthesized by the acrylation process followed by thiols addition. The resulting oligomers were then reacted with isophorone diisocyanate (IPDI) and dibutylin dilaurate (DBTDL) to form Thiolated Acrylated Epoxidized Palm Oil Urethane (t-AEPOU). t-AEPOU was then reacted under UV photoirradiation for further reaction and to pre-determine its curing activities. The polymerization of AEPO and t-AEPOU were confirms by using Attenuated Total Reflection - Fourier-Transform Infra Red (ATR-FTIR). This study affords new approach in synthesis of Palm Oil bio-based Polyurethane Coating.

scholarly journals PEMBUATAN BIODIESEL DARI MINYAK DEDAK PADI DENGAN REAKSI TRANSESTERIFIKASI MENGGUNAKAN KATALIS HETEROGEN ZEOLIT ALAM YANG DIMODIFIKASI DENGAN KOH

2017 ◽  
Vol 6 (1) ◽  
pp. 12-18
Author(s):  
Taslim ◽  
Sri Zahrani Dwi Mauliyah Parinduri ◽  
Putri Retno Wahyu Ningsih
Keyword(s):  
Reaction Time ◽  
Heterogeneous Catalyst ◽  
Rice Bran ◽  
Natural Zeolite ◽  
Heterogeneous Catalysts ◽  
Zeolite Catalyst ◽  
Rice Bran Oil ◽  
Transesterification Reaction ◽  
Molar Ratio ◽  
Impregnation Method

Biodiesel was usually produced from transesterification using alchohol. In this research rice bran oil was used as feedstock and methanol was used as reagent. The transesterification of rice bran oil had studied using KOH/natural zeolite as a solid heterogeneous catalyst. The objective of this study was to discover the effectivess of using natural zeolite modified by KOH as heterogeneous catalysts in the production of biodiesel from rice bran oil (RBO). KOH/natural zeolite catalyst was prepared by modification through impregnation method which was conducted on various KOH concentration (75 gram/100 ml – 175 gram/100 ml).  Transesterification reaction was conducted at 60 ºC, 500 rpm, and various amount of catalyst (2-4%), reaction time (1,5-3,5 hour) and molar ratio alcohol/oil (8:1-12:1). The highest yield of biodiesel was 98,71%, which was obtained by using 2% catalyst, reaction time 2 hour, molar ratio alcohol/oil 10:1. Natural zeolite as heterogeneous catalyst which modified by KOH could get the higher yield biodiesel on transesterification.

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