Potassium titanate as heterogeneous catalyst for methyl transesterification

González, Edgar Andrés Zúñiga; García-Guaderrama, M.; Villalobos, Mariela Rojas; Dellamary, Fernando López; Kandhual, Sanghamitra; Rout, N.P.; Tiznado, H.; Arízaga, Gregório Guadalupe Carbajal

doi:10.1016/j.powtec.2015.04.030

Cited by 13 publications

(7 citation statements)

References 24 publications

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“…Interestingly, efficient reactive solid catalysts, such as zeolite and nanomaterials, have been employed to beat down the limitations of heterogeneous catalysis; these catalysts have a shorter reaction time and can react at low molar ratios. [ 95 , 96 ].…”

Section: Exploitations Of Titanate Nanotubes Catalysts In Chemical Processesmentioning

confidence: 99%

One-dimensional titanate nanotube materials: heterogeneous solid catalysts for sustainable synthesis of biofuel precursors/value-added chemicals—a review

et al. 2021

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Graphical Abstract One-dimensional (1D) titanate nanotubes materials (protonated titanate nanotube (HTNT) and sodium titanate nanotube (NaTNT)) have been reported as low-cost and efficient catalytic materials in chemical syntheses for the production of biofuel precursors with interesting catalytic performance exhibited, even better than some commonly used zeolites, H-MOR, H-β, SO 4 2− /Al 2 O 3 , and H-ZSM-5 solid catalysts with environmental benign in focus when compared with homogeneous catalytic materials. This mini-review expressly revealed the significance and potential of using HTNT and NaTNT as sustainable and environmentally benign solid catalysts/supports in various chemical reactions. The critical assessment of biomass valorization and titanate nanostructured materials as catalysts/supports via Green Chemistry approach, #7 (use of renewable feedstocks), #9 (use of catalyst against stoichiometry) and United Nations (UN) Sustainable Development Goals (SDGs), #7 (affordable and clean energy; ensure access to inexpensive, reliable, sustainable, and new energy), is presented as integrated pathways to meet environmental benign technology toward sustainability. Hence, this work follows in the pattern of recent formulated features reported for solid catalysts—‘ PYSSVR ’ concept, which means P–production cost, Y–yield, S–stability, S–selectivity, V–versatility, and R–reusability.

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Section: Exploitations Of Titanate Nanotubes Catalysts In Chemical Processesmentioning

confidence: 99%

One-dimensional titanate nanotube materials: heterogeneous solid catalysts for sustainable synthesis of biofuel precursors/value-added chemicals—a review

et al. 2021

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“…Ìåòîä âèçíà÷åííÿ âì³ñòó Ti 4+ â ïëàâàõ Ê³ëüê³ñíèé âì³ñò Ti 4+ âèçíà÷àëè ïåðîêñèäíèì êîëîðèìåòðè÷íèì ìåòîäîì çà äîïîìîãîþ ôîòîêîëîðèìåòðà ÊÔÊ-2ÌÏ ïðè äîâaeèíè õâèë³ 400 íì ó êþâåò³ ç äîâaeèíîþ îïòè÷íîãî øëÿõó 1,0 ñì [13]: Çã³äíî ç ë³òåðàòóðíèìè äàíèìè, çà òåìïåðàòóðè ïîíàä 623 Ê ðåàêö³ÿ âçàºìîä³¿ ³ëüìåí³òó òà ëóãó â³äáóâàºòüñÿ ç óòâîðåííÿì ôåðèò³â [14]:…”

Section: âñòóïunclassified

Alkaline leaching of titanium from ilmenite of Irshansk deposit

Pysarenko¹,

Chernenko²,

Chygyrynets³

et al. 2021

Vopr. Khim. Khim. Tekhnol.

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X-ray spectral studies of the chemical composition of Irshansk ilmenite concentrates showed that it is leukoxenized mineral with a high (up to 79%) content of titanium oxide and inclusions of pseudorutile. The process of alkaline leaching of Ti4+ from ilmenite is investigated in the work. The study of the temperature effect on the reaction of ilmenite with potassium hydroxide at atmospheric pressure revealed that a temperature of 453 K is sufficient to obtain potassium titanate. A further increase in temperature does not provide a significant increase in the yield of water-soluble titanium. It is found that the optimal and sufficient ratio between ilmenite and potassium hydroxide is 1:2. An increase in the amount of potassium hydroxide in the reaction mixture is unsuitable, since it reduces the yield of soluble titanium and the final product will have a high alkalinity due to the presence of alkali which did not react. The main process of leaching with the formation of solid melt is completed in the first 30 minutes of the process. Infrared spectroscopy and X-ray diffraction showed that potassium titanate (K2TiO3) is formed under the studied conditions of alkaline leaching of ilmenite.

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“…Published studies on the catalyzed (trans)esterification often fixed reaction temperature at 60°C or 65°C as shown in Tables 2 and 3 23,78,145–148 . There are other studies that reported optimum temperatures from 50°C to 70°C 50,64,149 …”

Section: Factors Affecting Non‐catalytic and Heterogeneous Solid Catamentioning

confidence: 99%

“…Supporting material and the combined metal interact with the active catalyst species to strengthen the structure against leaching 205 . New metal oxide crystalline structures between the combined metal and the active catalyst species can be observed from X‐ray diffraction analysis of the catalysts prepared by co‐precipitation method 57,149,206 . On the other hand, catalysts treated by impregnation method often only experienced deposition of the active catalyst species 56,67,71 .…”

Section: Recent Trendsmentioning

confidence: 99%

Non‐catalytic and heterogeneous acid/base‐catalyzed biodiesel production: Recent and future developments

Tran‐Nguyen

Ong

et al. 2020

Asia-Pacific J Chem Eng

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Biodiesel production technologies, which are non-catalytic and those involving the use of heterogeneous catalyst(s), have gained much interest owing to its high biodiesel and pure glycerol throughput. During the past 15 years, many studies were devoted to explore new catalysts as well as improve non-catalytic technologies with aims to ultimately industrialize such biodiesel production processes. This review elucidates the main process parameters that influences non-catalytic and heterogeneous-catalyzed biodiesel production processes. The common parameters among these technologies include the process temperature, alcohol/oil molar ratio, pressure, catalyst loading, and feedstock quality.Optimization of these process parameters is discussed according to the use of conventional method (one factor at a time [OFAAT]) or the use of statistical methods such as response surface methodology (RSM), artificial neural network (ANN), and Taguchi method. In addition, recent development on noncatalytic process and those involving the use of heterogeneous catalyst(s), such as glycerol-free processes under supercritical conditions of alkyl donors and strategies to improve properties of heterogeneous catalyst, are also reviewed.Finally, insight based on the published techno-economical evaluations is also tackled, and future prospects and research directions on these technologies are also discussed.

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Potassium titanate as heterogeneous catalyst for methyl transesterification

Cited by 13 publications

References 24 publications

One-dimensional titanate nanotube materials: heterogeneous solid catalysts for sustainable synthesis of biofuel precursors/value-added chemicals—a review

One-dimensional titanate nanotube materials: heterogeneous solid catalysts for sustainable synthesis of biofuel precursors/value-added chemicals—a review

Alkaline leaching of titanium from ilmenite of Irshansk deposit

Non‐catalytic and heterogeneous acid/base‐catalyzed biodiesel production: Recent and future developments

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