Role of ultrasonic irradiation on transesterification of palm oil using calcium oxide as a solid base catalyst

2016 ◽  
Vol 120 ◽  
pp. 62-70 ◽  
Author(s):  
Jutipong Poosumas ◽  
Kanokwan Ngaosuwan ◽  
Armando T. Quitain ◽  
Suttichai Assabumrungrat
Keyword(s):  
Calcium Oxide ◽  
Palm Oil ◽  
Ultrasonic Irradiation ◽  
Solid Base ◽  
Base Catalyst ◽  
Solid Base Catalyst

scholarly journals Development of Biodiesel Production Technology from Waste Cooking Oil with Calcium Oxide as Solid Base Catalyst

2007 ◽  
Vol 50 (2) ◽  
pp. 79-86 ◽  
Author(s):  
Masato Kouzu ◽  
Shinya Yamanaka ◽  
Takekazu Kasuno ◽  
Masahiko Tajika ◽  
Yoichi Aihara ◽  
...  
Keyword(s):  
Calcium Oxide ◽  
Production Technology ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Solid Base ◽  
Base Catalyst ◽  
Solid Base Catalyst ◽  
Cooking Oil

scholarly journals CALCIUM OXIDE AS A SOLID BASE CATALYST FOR TRANSESTERIFICATION OF TRA CATFISH FAT

2009 ◽  
Vol 12 (17) ◽  
pp. 91-99 ◽  
Author(s):  
Huong Thi Thanh Le ◽  
Tien Van Huynh ◽  
Tan Minh Phan ◽  
Hoa Thi Viet Tran
Keyword(s):  
Calcium Oxide ◽  
Catalyst Concentration ◽  
Transesterification Reaction ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Solid Base ◽  
High Catalytic Activity ◽  
Base Catalyst ◽  
Solid Base Catalyst ◽  
Heterogeneous Solid

In our work, biodiesel was prepared from Tra fat by methanolysis reaction using activated calcium oxide as solid base catalyst. Effects of various process parameters on biodiesel production such as molar ratio of methanol to fat, catalyst concentration, temperature and time of reaction and the active mechanism of CaO catalyst for the transesterification reaction were investigated. The results show that CaO has strong basicity and high catalytic activity as a heterogeneous solid base catalyst and the transesterification reaction takes place on basic sites of calcium diglyceroxide formed due to the reaction between Cao and the by-produced glycerol. The biodiesel yield achieves 92.95 % at 60°C, 90 minutes, 8:1 molar ratio of fat to methanol, and 6 % CaO catalyst. Important fuel properties of the produced biodiesel meet the specifications of ASTM D 6751 biodiesel standard.

scholarly journals Mass-transfer studies of solid-base catalyst-aided CO2 absorption and solid-acid catalyst-aided CO2 desorption for CO2 capture in a pilot plant using aqueous solutions of MEA and blends of MEA-MDEA and BEA-AMP

Clean Energy ◽  
2019 ◽  
Vol 3 (4) ◽  
pp. 263-277
Author(s):  
James Coker ◽  
Daniel Boafo Afari ◽  
Jessica Narku-Tetteh ◽  
Raphael Idem
Keyword(s):  
Mass Transfer ◽  
Pilot Plant ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Solid Base ◽  
Co2 Absorption ◽  
Base Catalyst ◽  
Solid Base Catalyst ◽  
Mass Transfer Studies

Abstract Mass-transfer studies of catalyst-aided CO2 absorption and desorption were performed in a full-cycle, bench-scale pilot plant to improve CO2 absorption using 5M MEA, 5M MEA-2M MDEA and 2M BEA-2M AMP. A solid-base catalyst, K/MgO, and an acid catalyst, HZSM-5, were used to facilitate absorption and desorption, respectively. Absorption and desorption mass-transfer performance was presented in terms of the overall mass-transfer coefficient of the gas side (KGav) and liquid side (KLav), respectively. For non-catalytic runs, the highest KGaV and KLaV were 0.086 Kmolm3.kPa.hr  and 0.785 1hr for 2M BEA-2M AMP solvent. The results showed 38.7% KGav and 23.6% KLav increase for 2M BEA-2M AMP with only HZSM-5 catalyst in desorber and a 95% KGaV and 45% KLaV increase for both K/MgO catalyst and HZSM-5 catalyst. This was attributed to the role of K/MgO in bonding loosely with CO2 and making it available for the amine reaction.

Active phase of calcium oxide used as solid base catalyst for transesterification of soybean oil with refluxing methanol

2008 ◽  
Vol 334 (1-2) ◽  
pp. 357-365 ◽  
Author(s):  
Masato Kouzu ◽  
Takekazu Kasuno ◽  
Masahiko Tajika ◽  
Shinya Yamanaka ◽  
Jusuke Hidaka
Keyword(s):  
Soybean Oil ◽  
Calcium Oxide ◽  
Active Phase ◽  
Solid Base ◽  
Base Catalyst ◽  
Solid Base Catalyst

Surface Crystalline Phase and Basicity of MgO/ZrO2-La2O3-y Solid Base Catalyst

2013 ◽  
Vol 669 ◽  
pp. 250-256
Author(s):  
Yu Su ◽  
Peng Wang ◽  
Jin Sheng Gao
Keyword(s):  
Tetragonal Phase ◽  
Molar Ratio ◽  
Solid Base ◽  
Base Catalyst ◽  
Solid Base Catalyst ◽  
X Ray ◽  
Surface Basicity ◽  
Catalyst Temperature ◽  
Temperature Programmed

MgO/ZrO2-La2O3-y solid base catalyst was prepared by precipitation immersion process. Raman spectroscope and X-ray powder diffraction (XRD) were used to determinate the surface phase and bulk phase of solid base catalyst. Temperature programmed desorption of CO2 (CO2-TPD) was employed to study the surface basicity of the catalyst. The results reveal that Mg2+ ion plays a key role in the stabilization of tetragonal phase ZrO2 not only in the bulk but also on the surface of catalyst when the Mg/Zr molar ratio is 0.4. The doping of La2O3 has the role of improving the dispersion of the active component MgO on ZrO2 surface, consequently resulting in the improvement of the catalytic activity of the catalyst rather than stabilizing tetragonal phase ZrO2.

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