Sustainable production of acetaldehyde from lactic acid over the magnesium aluminate spinel

Tang, Congming; Zhai, Zhanjie; Li, Xinli; Sun, Liangwei; Bai, Wei

doi:10.1016/j.jtice.2015.06.014

Cited by 25 publications

(13 citation statements)

References 73 publications

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“…Similar to this observation, the selectivity toward acetaldehyde over LiNO3/SiO2 and NaNO3/ SiO2 catalysts is also higher. According to previous investigations 50,51 , acetaldehyde is produced via decarbonylation or decarboxylatipon reaction of LA, accompanying with formation of hydrogen. In order to further confirm the formation of acetaldehyde via decarbonylation or decarboxylatipon of LA, the tail gas was analyzed (shown in Fig.S3 (Supporting Information)).…”

Section: Evaluation Of Catalysts 321 Precursorsmentioning

confidence: 99%

Comparative Study on Catalytic Performance of the Production of 2, 3-Pentanedione from Lactic Acid Condensation over SiO<sub>2</sub>-Supported Alkali Metal Nitrates

Sun¹,

LI²,

TANG³

2016

Acta Physico-Chimica Sinica

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The production of 2,3-pentanedione from lactic acid over SiO2-supported alkali metal nitrates under various conditions was investigated. Using nitrate (NO3-) as the anion, the effect of alkali metal cations on Claisen condensation of lactic acid into 2,3-pentanedione was focused on. Among precursors such as LiNO3, NaNO3, KNO3, and CsNO3, CsNO3 displayed the best catalytic performance. Characterization of the fresh and used catalysts by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy revealed that all MNO3 (M = Li, Na, K, Cs) salts were transformed into alkali metal lactates during the reaction. Alkali metal lactates were identified as active species for catalytic Claisen condensation of lactic acid into 2,3-pentanedione. CO2 temperature-programmed desorption (TPD) results of the used catalysts showed that the CsNO3/SiO2 catalyst was the most alkaline. For that reason, the CsNO3/SiO2 catalyst displayed the highest catalytic performance of those examined. The effects of reaction temperature and loading amount of CsNO3 on reaction performance

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Section: Evaluation Of Catalysts 321 Precursorsmentioning

confidence: 99%

Comparative Study on Catalytic Performance of the Production of 2, 3-Pentanedione from Lactic Acid Condensation over SiO<sub>2</sub>-Supported Alkali Metal Nitrates

Sun¹,

LI²,

TANG³

2016

Acta Physico-Chimica Sinica

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“…However, only a few investigations are reported on LA decarbonylation at present. These catalytic materials used in the reaction are focused on zeolites (HMCM22, HZSM5 and NaZSM5), mesoporous aluminum phosphate, aluminum sulfate, Mg‐Al‐O composites,, and silicate‐supported heteropolyacids . In recent years, the syntheses, structures and catalytic properties of rare earth metal compounds have been extensively attracted.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Surface‐Controlled CePO₄ and Its Application for Catalyzed Decarbonylation of Lactic Acid to Acetaldehyde

Pang

Zou

et al. 2018

ChemistrySelect

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CePO4 materials were prepared via reaction of cerous nitrate with phosphates such as Na3PO4, Na4P2O7, Na5P3O10 and (NH4)xH3‐xPO4 (x=2, and 3) in aqueous solution, followed by calcination at 550oC under the air atmosphere. It was found that the uniform CePO4 indexed to JCPDS NO. 83‐0650 was achieved no matter what the phosphates varied in the screened phosphate precursors. However, compared with relative intensity in the standard patterns with R(012)/(120) value of 0.715 (R(012)/(120), Intensity ratio between face (012) and face (120)), some samples obtained from Na4P2O7 and (NH4)xH3‐xPO4 displayed an enhanced diffraction peak at 2θ = 31.1o, which ascribes to plane (012), while others obtained from Na3PO4 and Na5P3O10 were in good agreement with the standard sample (JCPDS NO. 83‐0650, CePO4). Correlation between the crystal plane (012) and activity revealed that the enhanced crystal plane favored an enhancement of activity for decarbonylation of lactic acid to acetaldehyde. Effect of aqueous ammonia on catalytic performance of samples was also investigated. It was clearly seen that the sample obtained from Na4P2O7 offered an enhanced activity for decarbonylation of lactic acid as it was treated with aqueous ammonia while others almost remained unchanged or even decreased slightly. XRD patterns for the obtained sample from Na4P2O7 treated with aqueous ammonia disclosed that the diffraction peak at 2θ = 31.1o increased, further demonstrating that crystal face (012) relates to activity of samples for decarbonylation of lactic acid. NH3 (CO2)‐Temperature Programmed Desorption experiments suggested that the surface acid‐base properties of catalysts related to the ratios of (012)/(120). Varying the catalyst preparation conditions such as calcination temperature and aqueous ammonia can control R(012)/(120) values, thus adjusting acid‐base properties of catalysts. Stability experiments show that the catalyst has an acceptable durability, and the activity of the deactivated catalyst can be recovered by a simple calcination at 550 oC in air.

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“…LA can be used as a platform molecule to produce a variety of chemicals such as acrylic acid (AA), 2,3pentanedione, acetaldehyde, propionic acid, pyruvic acid and poly-lactic acid under the given conditions including appropriate catalysts and reaction conditions. [17][18][19][20] For example, AA can be obtained through the dehydration reaction of LA, 21,22 2,3pentanedione obtained through the intermolecular condensation reaction of two molecules of LA, [23][24][25][26] acetaldehyde obtained through a decarbonylation/decarboxylation reaction of LA, [27][28][29][30] and propionic acid obtained through the deoxygenation reaction of LA. 31,32 Among these chemicals, AA has the biggest market demand (around 5.1 Â 10 6 t per year), and is widely used to produce acrylates, dispersants, polymers, and so on.…”

Section: Introductionmentioning

confidence: 99%

Ammonia promoted barium sulfate catalyst for dehydration of lactic acid to acrylic acid

Chen

Cao

et al. 2017

RSC Adv.

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Sustainable production of acetaldehyde from lactic acid over the magnesium aluminate spinel

Cited by 25 publications

References 73 publications

Comparative Study on Catalytic Performance of the Production of 2, 3-Pentanedione from Lactic Acid Condensation over SiO<sub>2</sub>-Supported Alkali Metal Nitrates

Comparative Study on Catalytic Performance of the Production of 2, 3-Pentanedione from Lactic Acid Condensation over SiO<sub>2</sub>-Supported Alkali Metal Nitrates

Synthesis of Surface‐Controlled CePO₄ and Its Application for Catalyzed Decarbonylation of Lactic Acid to Acetaldehyde

Ammonia promoted barium sulfate catalyst for dehydration of lactic acid to acrylic acid

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Sustainable production of acetaldehyde from lactic acid over the magnesium aluminate spinel

Cited by 25 publications

References 73 publications

Comparative Study on Catalytic Performance of the Production of 2, 3-Pentanedione from Lactic Acid Condensation over SiO<sub>2</sub>-Supported Alkali Metal Nitrates

Comparative Study on Catalytic Performance of the Production of 2, 3-Pentanedione from Lactic Acid Condensation over SiO<sub>2</sub>-Supported Alkali Metal Nitrates

Synthesis of Surface‐Controlled CePO4 and Its Application for Catalyzed Decarbonylation of Lactic Acid to Acetaldehyde

Ammonia promoted barium sulfate catalyst for dehydration of lactic acid to acrylic acid

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Product

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Synthesis of Surface‐Controlled CePO₄ and Its Application for Catalyzed Decarbonylation of Lactic Acid to Acetaldehyde