Category: esters-buliding-blocks

Ghani, Naila published the artcileA Facile Approach for the Synthesis of SrTiO3/g-C3N4 Photo-catalyst and its Efficacy in Biodiesel Production, Quality Control of 929-77-1, the main research area is biodiesel production strontium titanate graphitic carbon nitride photocatalyst.

Visible light active photocatalysts have attracted a lot of interest due to their simple chem. workup and recyclability. In this study, the role of Strontium Titanate/graphitic Carbon Nitride composite (SrTiO3/g-C3N4) was investigated for the pretreatment of waste frying oil (WFO) to reduce high free fatty acids (FFAs) for biodiesel production SrTiO3/g-C3N4 photo-catalyst was synthesized through the facile refluxing method and its activity was also compared with simple graphitic carbon nitride (g-C3N4). Exptl. results revealed that SrTiO3/g-C3N4 possesses higher efficiency as compared to g-C3N4. Photo-catalyst was characterized through SEM-EDX, XRD and FT-IR. Maximum conversion of FFAs (85%) was achieved at 1% catalyst dose, 800 rpm stirring speed, 3 : 1 methanol to oil ratio, and 4 h of reaction time. Esterified WFO was converted to waste frying oil Me esters (WFOME) by using CaO-KOH heterogeneous catalyst. The maximum yield of WFOME was obtained at 1.25% catalyst dose, 65 °C, 600 rpm, 2 h of reaction time, and 12 : 1 methanol to oil ratio. Physicochem. anal. of WFOME revealed that it is in accord with ASTM standards

ChemistrySelect published new progress about Acid number. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Quality Control of 929-77-1.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Alwi, Azham published the artcileEvaluation of engine performance and exhaust emission characteristics in a diesel engine using isobutanol-Calophyllum inophyllum biodiesel-diesel ternary blends, Quality Control of 929-77-1, the main research area is diesel engine isobutanol calophyllum inophyllum biodiesel ternary blend evaluation; Biodiesel; Diesel engine; Engine performance; Exhaust emission; Isobutanol.

The availability of natural energy resources and the environmental issues are the most significant issues that are often highlighted by the world communities. With regard to these problems, isobutanol is a higher chain alc. with four carbons which can be derived from biomass resources and it is potential to become an alternative fuel source besides the biodiesel for a diesel engine. The aim of this study is to evaluate the effect of isobutanol with Calophyllum inophyllum Me ester and diesel as the ternary blend on physicochem. properties, engine performance, and emission characteristics. Five different fuel blends containing Calophyllum inophyllum biodiesel and isobutanol were tested on a single-cylinder direct injection diesel engine at different engine load of brake mean effective pressure. The physicochem. properties of the fuel blends were measured and then compared with neat diesel. The results indicate that the blend containing isobutanol and CIME gives a slight increase in BSEC and EGT and a minimal drop in BTE as compared to that of neat diesel. Besides that, the tested blends show a reduction of carbon monoxide and unburned hydrocarbon emissions. Meanwhile, all the fuel blends show a minimal increase in carbon dioxide and nitrogen oxides emissions, compared to that of neat diesel. Isobutanol can be proved as a preferred substitute for biodiesel and diesel fuels to achieve desired engine performance and emissions level.

Environmental Science and Pollution Research published new progress about Acid number. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Quality Control of 929-77-1.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Borah, Manash Jyoti published the artcileSynthesis and application of Co doped ZnO as heterogeneous nanocatalyst for biodiesel production from non-edible oil, COA of Formula: C9H18O2, the main research area is cobalt doped zinc oxide nanocatalyst biodiesel non edible oil.

Exploration of non-edible oil as a feedstock and the use of new heterogeneous nanocatalyst could contribute to bioenergy research. In this regard, the present work is focussed on the use of cobalt doped zinc oxide nanocatalyst for production of biodiesel from Mesua ferrea oil. The synthesized catalyst has been analyzed through X-ray diffraction (XRD), Fourier Transform IR Spectroscopy (FT-IR), SEM (SEM), Energy Dispersive X-ray (EDX), and Thermogravimetric anal. (TGA) techniques. Under optimal reaction condition, maximum biodiesel conversion of 98.03% was obtained in 3 h at 60°C with 2.5 wt% catalyst loading and 1:9 oil to methanol molar ratio. The produced biodiesel has been characterized using Proton NMR (1H NMR), Carbon NMR (13C NMR) and Gas Chromatog.-Mass Spectroscopy (GC-MS) techniques. Fuel properties of the produced biodiesel have also been determined The result showed good catalytic activity of cobalt doped Zinc oxide nanocatalyst and could be used for large scale biodiesel production from Mesua ferrea oil by further enhancing its stability.

Renewable Energy published new progress about Acid number. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, COA of Formula: C9H18O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

He, Pan Yang published the artcileLow-energy synthesis of kaliophilite catalyst from circulating fluidized bed fly ash for biodiesel production, Recommanded Product: Methyl docosanoate, the main research area is Canola oil transesterification catalyst fly ash kaliophilite biodiesel.

Circulating fluidized bed fly ash (CFBFA) was used to synthesize kaliophilite catalyst via a facile and low-energy two-step process: fabrication of amorphous CFBFA geopolymer and hydrothermal transformation of CFBFA-based geopolymer into kaliophilite. X-ray diffraction and SEM results demonstrated that CFBFA was successfully converted into kaliophilite with short prismatic crystals having size of ∼1 μm. Temperature-programmed desorption of CO2 anal. results indicated the presence of abundant weak, medium-strength and high-strength basic sites on the kaliophilite catalyst, which were resp. assigned to hydroxyl groups, K-O ion pairs, and O2- ions. When kaliophilite was used as a heterogeneous catalyst for biodiesel production, the highest biodiesel yield of 99.2% was obtained under transesterification conditions of 5 wt% catalyst concentration, methanol:canola oil mole ratio of 15:1, reaction temperature of 85 °C, and reaction time of 6 h. The kaliophilite catalyst could be easily recovered and reused for four cycles without significant deactivation. Further, a solid base catalysis mechanism for transesterification over kaliophilite catalyst was proposed.

Fuel published new progress about Acid number. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Recommanded Product: Methyl docosanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Marso, Tuan Mohommed Mudassar published the artcileZnO/CuO composite catalyst to pre-esterify waste coconut oil for producing biodiesel in high yield, Synthetic Route of 110-42-9, the main research area is zinc copper oxide composite catalyst waste coconut oil biodiesel.

The study reported herein describes a two-stepped catalytic approach to produce biodiesel from waste-coconut oil in high (> 90%) yield. In this regard, pre-esterification of the Free Fatty Acid (FFA) content (9.58 mg KOH g-1) of waste coconut oil in the presence of a simple ZnO/CuO composite, as a heterogeneous acid-catalyst to prevent competitive saponification and hydrolysis side reactions caused by FFA, followed by the base-catalyzed transesterification of the triglyceride of oil was performed. The ZnO/CuO catalyst was synthesized using a simultaneous precipitation method, and characterized by spectroscopic (FTIR, UV-Vis), SEM, XRD and XRF techniques. The surface acidity of the catalyst and the FFA value (AV) of the oil before and after the pre-esterification was determined using the Hammett indicator method. The pre-esterification was performed at different temperatures (5-125°C), time intervals (15-235 min), and using different weight percentages (wt%) of catalyst loading (0.005-2.665) and methanol-to-oil ratios. The optimum reaction conditions were identified using a central composite rotatable design (CCRD). The results of the study revealed that a small amount of the catalyst (1.66 wt%) is enough, and the catalyst could be easily recovered and reused 3-4 catalytic runs for reducing the AV of waste coconut oil by 94.53% under milder conditions (within 113 min, at 55°C in the presence of 10.5:1 methanol-to-oil ratio) than those conditions reported so far. The biodiesel obtained this way was free from soap, and consistent with ASTM-D6751 and EN-14214 standards

Reaction Kinetics, Mechanisms and Catalysis published new progress about Acid number. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Synthetic Route of 110-42-9.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Marso, Tuan Mohommed Mudassar published the artcileZnO/CuO composite catalyst to pre-esterify waste coconut oil for producing biodiesel in high yield, Safety of Methyl octanoate, the main research area is zinc copper oxide composite catalyst waste coconut oil biodiesel.

The study reported herein describes a two-stepped catalytic approach to produce biodiesel from waste-coconut oil in high (> 90%) yield. In this regard, pre-esterification of the Free Fatty Acid (FFA) content (9.58 mg KOH g-1) of waste coconut oil in the presence of a simple ZnO/CuO composite, as a heterogeneous acid-catalyst to prevent competitive saponification and hydrolysis side reactions caused by FFA, followed by the base-catalyzed transesterification of the triglyceride of oil was performed. The ZnO/CuO catalyst was synthesized using a simultaneous precipitation method, and characterized by spectroscopic (FTIR, UV-Vis), SEM, XRD and XRF techniques. The surface acidity of the catalyst and the FFA value (AV) of the oil before and after the pre-esterification was determined using the Hammett indicator method. The pre-esterification was performed at different temperatures (5-125°C), time intervals (15-235 min), and using different weight percentages (wt%) of catalyst loading (0.005-2.665) and methanol-to-oil ratios. The optimum reaction conditions were identified using a central composite rotatable design (CCRD). The results of the study revealed that a small amount of the catalyst (1.66 wt%) is enough, and the catalyst could be easily recovered and reused 3-4 catalytic runs for reducing the AV of waste coconut oil by 94.53% under milder conditions (within 113 min, at 55°C in the presence of 10.5:1 methanol-to-oil ratio) than those conditions reported so far. The biodiesel obtained this way was free from soap, and consistent with ASTM-D6751 and EN-14214 standards

Reaction Kinetics, Mechanisms and Catalysis published new progress about Acid number. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Safety of Methyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Xiao, Mengshi published the artcileSynthesis of Biodiesel from Waste Cooking Oil by One-step Esterification and Its Structural Characterization, COA of Formula: C23H46O2, the main research area is waste cooking oil biodiesel esterification.

The preparation of biodiesel as an alternative to petroleum-based fuels can expand the research and development of renewable energy, and is conducive to environmental protection. In this study, waste cooking oil (WCO) was used as raw material, and then pretreated, and then esterified with methanol under the action of sodium hydroxide catalyst to transformed into fatty acid Me ester (FAME) to prepare biodiesel. The reaction conditions were optimized by a three factorial Box-Behnken design through response surface methodol., when the reaction temperature was 70.1°C, the catalyst concentration was 1.013% and the molar ratio of methanol to oil was 6.5:1, the maximum FAME was up to 99.342%. Finally, the conversion of the triglyceride to the Me ester was confirmed by NMR (1H and 13C), and no unsaturation was present in the Me ester. The chem. composition of biodiesel was determined by GC-MS anal. There are mainly 11 FAME ranging from C16 to C24. The potential of WCO to prepare biodiesel was obtained.

Waste and Biomass Valorization published new progress about Acid number. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, COA of Formula: C23H46O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Lu published the artcileDecreasing the acid value of pyrolysis oil via esterification using ZrO2/SBA-15 as a solid acid catalyst, HPLC of Formula: 110-42-9, the main research area is zirconia silica solid acid catalyst oil esterification.

The high acid value of pyrolysis oil obtained from biol. oil is the main drawback that not only affects the properties of pyrolysis oil, but also leads to the corrosion of equipment. Herein, pyrolysis oil obtained from rubber seed oil was upgraded via esterification using ZrO2/SBA-15 as a solid acid catalyst. Using ZrO2/SBA-15 as a catalyst, the acid value of the esterified pyrolysis oil obtained from rubber seed oil was only 1.2 mg KOH·g-1. The d. and kinematic viscosity both reached the standard range of 0# diesel oil. The excellent catalytic activity of ZrO2/SBA-15 was studied using NH3-TPD and Py-IR. Furthermore, the conversion reached 96.7% when the ZrO2/SBA-15 catalyst was re-used three times, which shows the ZrO2/SBA-15 catalyst possessed excellent catalytic activity and stability for upgrading pyrolysis oil via esterification.

Renewable Energy published new progress about Acid number. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, HPLC of Formula: 110-42-9.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Lu published the artcileDecreasing the acid value of pyrolysis oil via esterification using ZrO2/SBA-15 as a solid acid catalyst, Name: Methyl octanoate, the main research area is zirconia silica solid acid catalyst oil esterification.

The high acid value of pyrolysis oil obtained from biol. oil is the main drawback that not only affects the properties of pyrolysis oil, but also leads to the corrosion of equipment. Herein, pyrolysis oil obtained from rubber seed oil was upgraded via esterification using ZrO2/SBA-15 as a solid acid catalyst. Using ZrO2/SBA-15 as a catalyst, the acid value of the esterified pyrolysis oil obtained from rubber seed oil was only 1.2 mg KOH·g-1. The d. and kinematic viscosity both reached the standard range of 0# diesel oil. The excellent catalytic activity of ZrO2/SBA-15 was studied using NH3-TPD and Py-IR. Furthermore, the conversion reached 96.7% when the ZrO2/SBA-15 catalyst was re-used three times, which shows the ZrO2/SBA-15 catalyst possessed excellent catalytic activity and stability for upgrading pyrolysis oil via esterification.

Renewable Energy published new progress about Acid number. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Name: Methyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ding, Wenwu published the artcileFermentation characteristics of Pixian broad bean paste in closed system of gradient steady-state temperature field, Application In Synthesis of 110-42-9, the main research area is fermentation Pixian broad bean paste temperature; Correlation; Gradient steady-state temperature field; Microbial communities; Physicochemical factors; Pixian broad bean paste; Volatile components.

A closed system of gradient steady-state temperature field (GSTF) was constructed to ferment Pixian broad bean paste (PBP). The contents of physicochem. factors and organic acids in the fermentation under GSTF (FG) were closer to those in the traditional fermentation (TF). The taste intensities of 8 free amino acids in the FG were higher than those in the constant temperature fermentation (CTF), but 14 in the TF showed the highest among the processes of FG, CTF and TF. The FG product had the most volatiles with 87, and its flavor properties were more stable. The FG produced great effects on the microbe evolutions especially improved the fungal diversity. Bacillus were identified as the core microbes in the FG while the roles of Staphylococcus, Lactobacillus and Pantoea were strengthened. The results indicated that the fermentation characteristics in the FG had been further improved compared with the CTF.

Food Chemistry published new progress about Acetobacter. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Application In Synthesis of 110-42-9.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics