A flow-through tubular catalytic membrane reactor using zirconium sulfate tetrahydrate-impregnated carbon membranes for acidified oil esterification

Ma, Lingling; Lv, Enmin; Du, Lixiong; Han, Ying; Lü, Jie; Ding, Jincheng

doi:10.1016/j.joei.2016.08.007

Cited by 15 publications

(5 citation statements)

References 42 publications

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“…1), the band 1002.42 cm -1 may be an impurity (see Table 1). Furthermore, the appearance of the bands at 794, 594, and 549 cm -1 came from symmetry and asymmetry stretching of Zr-O bonding in the form of Zr-O-Zr and O-Zr-O [13][14][15][16].…”

Section: Optimization Of Acid Leaching Reactormentioning

confidence: 99%

Synthesis of Low TENORM Zirconium Sulfate from ZrO(OH)<sub>2</sub> with Sulfuric Acid

Amliliana

Muzakky

2021

Indones. J. Chem.

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Zirconium sulfate (ZS) has become one of the alternative chemical compounds for substituting traditional tannery substances using chromium(III) which was not environmentally friendly. The purpose of this research was to synthesize ZS from ZrO(OH)2 using H2SO4 with low Technologically Naturally Occurring Radioactive Material (TENORM) content. This ZS synthesis process shortened the old processing flow at which plenty of chemical reactors were used. The results showed that with 300 mg of feed, 600 mL of 95% H2SO4, at a temperature of 250 °C, the contact time of 150 min, the obtained conversion was 77.76%. Furthermore, in this 95% acid leaching reactor, the SiO2 content was still 2.79% and it was not TENORM free yet, but the FTIR and XRD images were in accordance with BDH standards. Moreover, the quenching process results had been free of SiO2 and TENORM content, but they still contained 1.48% HfO2. The surface of the TEM images from the quenching results had been in the form of elongated and transparent crystals. The result of the economic feasibility analysis showed that the new ZS synthesis process was more economical or profitable when it was compared to the old ZS synthesis process, with a BCR value of 1.258.

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Section: Optimization Of Acid Leaching Reactormentioning

confidence: 99%

Synthesis of Low TENORM Zirconium Sulfate from ZrO(OH)<sub>2</sub> with Sulfuric Acid

Amliliana

Muzakky

2021

Indones. J. Chem.

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“…They are used as a heterogeneous solid acid catalyst for the esterification of acidified oil with methanol. Because of the high specific area of TCM, the catalytic activity of 11.4% zirconium sulfate/TCM can be improved by 1.8 times compared with bulk zirconium sulfate [64]. Solid acid is prepared by sulfonation of surface-modified α-zirconium phosphate (ZrP) single-layer nanosheets (SO 3 H@ZrP), and the prepared solid acid was investigated for the esterification of oleic acid with methanol to produce biodiesel.…”

Section: Zro 2 -Based Catalystsmentioning

confidence: 99%

Biodiesel Production Using Solid Acid Catalysts Based on Metal Oxides

et al. 2020

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The development of solid acid catalysts, especially based on metal oxides and different magnetic nanoparticles, gained much awareness recently as a result of the development of different nano-based materials. Solid acid catalysts based on metal oxides are promising for the (trans)esterification reactions of different oils and waste materials for biodiesel production. This review gives a brief overview of recent developments in various solid acid catalysts based on different metal oxides, such as zirconia, zinc, titanium, iron, tungsten, and magnetic materials, where the catalysts are optimized for various reaction parameters, such as the amount of catalyst, molar ratio of oil to alcohol, reaction time, and temperature. Furthermore, yields and conversions for biodiesel production are compared. Such metal-oxide-based solid acid catalysts provide more sustainable, green, and easy-separation synthesis routes with high catalytic activity and reusability than traditionally used catalysts.

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“…Other examples of membrane catalytic reactions include ethanol reforming, 60 and separation of xylene isomers over zeolitebased membranes. 61 Ma et al adopted a flow-through zirconium sulfate tetrahydrate-impregnated carbon membrane for the free fatty acids esterification and reached equilibrium in 4 h. 62 Flow-through membranes have also been designed for VOC degradation 63,64 and water denitrification. The main drawback of flow-through membranes remains their stability.…”

Section: Catalytic Membrane Reactorsmentioning

confidence: 99%

Process Intensification and Catalysis

Boffito

Gerven

2019

Reference Module in Chemistry, Molecular Sciences and Chemical Engineering

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This article was published in the Elsevier Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, and the attached copy is provided by Elsevier for the author's benefit and for the benefit of the author's institution, for non-commercial research and educational use including without limitation use in instruction at your institution, sending it to specific colleagues who you know, and providing a copy to your institution's administrator.

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A flow-through tubular catalytic membrane reactor using zirconium sulfate tetrahydrate-impregnated carbon membranes for acidified oil esterification

Cited by 15 publications

References 42 publications

Synthesis of Low TENORM Zirconium Sulfate from ZrO(OH)<sub>2</sub> with Sulfuric Acid

Synthesis of Low TENORM Zirconium Sulfate from ZrO(OH)<sub>2</sub> with Sulfuric Acid

Biodiesel Production Using Solid Acid Catalysts Based on Metal Oxides

Process Intensification and Catalysis

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