Alkaline Earth Metal Modified NaY for Lactic Acid Dehydration to Acrylic Acid: Effect of Basic Sites on the Catalytic Performance

Abstract Interaction of alkaline earth metal (magnesium, calcium, strontium and barium) ions with acetic and lactic acid in aqueous media was investigated by 13C NMR spectroscopy. In the acetate systems, signals whose chemical shifts were the averages of those of the free and bound acetate ions were observed. Downfield shifts of the carboxylate carbon signals with increasing metal ion concentration indicated that the acetate ion acted as a monodentate ligand coordinating to the metal ion using the carboxylate group. The metal ion concentration dependence of the peak positions of the methine and carboxylate carbon signals of the lactate ion in the lactate systems suggested that the lactate ion coordinated to a metal ion using the carboxylate and hydroxyl groups. Unique upfield shifts upon complexation in the magnesium lactate systems suggested that the lactate ion coordinated to the magnesium ion from outside the primary hydration sphere.The present results were consistent with the isotope effects of the alkaline earth metals observed in cation exchange chromatography.

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Copolymers of styrene and acrylic acid salts. II. Preparation and properties of copolymers of styrene and some alkaline earth metal and some alkali metal acrylates

Polimery ◽

10.14314/polimery.1982.425 ◽

1982 ◽

Vol 27 (11) ◽

pp. 425-427 ◽

Cited By ~ 3

Author(s):

ZBIGNIEW WOJTCZAK ◽

КAZIMIERA SUCHOCKA-GALAS

Keyword(s):

Acrylic Acid ◽

Alkali Metal ◽

Alkaline Earth ◽

Earth Metal ◽

Alkaline Earth Metal ◽

Acid Salts

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Synthesis of lactic acid from dihydroxyacetone: use of alkaline-earth metal hydroxides

Catalysis Science & Technology ◽

10.1039/c3cy20859a ◽

2013 ◽

Vol 3 (5) ◽

pp. 1380 ◽

Cited By ~ 29

Author(s):

Susanne Lux ◽

Matthäus Siebenhofer

Keyword(s):

Lactic Acid ◽

Alkaline Earth ◽

Earth Metal ◽

Alkaline Earth Metal ◽

Metal Hydroxides

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Effect of Solid Bases Catalyst on Conversion of Acrylonitrile into Acrylic Acid by Hydrothermal Reaction

E3S Web of Conferences ◽

10.1051/e3sconf/202019404017 ◽

2020 ◽

Vol 194 ◽

pp. 04017

Author(s):

Chang Yue ◽

Haixia Ye ◽

Xuejun Yang ◽

Ke Wang ◽

Jia Miao ◽

...

Keyword(s):

Acrylic Acid ◽

Alkaline Earth ◽

Hydrothermal Reaction ◽

Earth Metal ◽

Alkaline Earth Metal ◽

Solid Base ◽

Solid Base Catalysts ◽

Base Catalysts ◽

Effect Of Treatment ◽

Short Time

This study aims at the shortcomings of the current industrial application of acrylonitrile wastewater treatment, using alkali-catalyzed hydrothermal technology to convert acrylonitrile into acrylic acid for achieving resource utilization. In this study, alkali metal, alkaline earth metal hydroxide and composite solid base were used as catalysts to investigate catalytic effects of these solid based on the hydrothermal reaction. The results show when using the alkali and alkaline-earth metal hydroxides as catalysts, the best effect of treatment was KOH and the highest yield of acrylic acid reached 56.60%. It was also found that, among the three kinds of solid base catalysts (Ca-O-Mg, K-O-Al, K-O-Si) adopted with the same mass and various loading capacity, K-O-Si (15%) was the most effective catalyst for the conversion of acrylonitrile, and the highest yield of acrylic acid reached 57.78%. This process provides an environmentally friendly method toward the synthesis of useful acrylic acid from acrylonitrile within a very short time.

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Rare earth metal modified NaY: Structure and catalytic performance for lactic acid dehydration to acrylic acid

Catalysis Communications ◽

10.1016/j.catcom.2008.01.023 ◽

2008 ◽

Vol 9 (9) ◽

pp. 1799-1803 ◽

Cited By ~ 79

Author(s):

Hongjuan Wang ◽

Dinghua Yu ◽

Peng Sun ◽

Jie Yan ◽

Yang Wang ◽

...

Keyword(s):

Lactic Acid ◽

Rare Earth ◽

Acrylic Acid ◽

Rare Earth Metal ◽

Earth Metal ◽

Catalytic Performance

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Solution combustion synthesis of Ni/La2O3 for dry reforming of methane: tuning the basicity via alkali and alkaline earth metal oxide promoters

RSC Advances ◽

10.1039/d1ra05511a ◽

2021 ◽

Vol 11 (53) ◽

pp. 33734-33743

Author(s):

Yahia H. Ahmad ◽

Assem T. Mohamed ◽

A. Kumar ◽

Siham Y. Al-Qaradawi

Keyword(s):

Combustion Synthesis ◽

Alkaline Earth ◽

Earth Metal ◽

Solution Combustion Synthesis ◽

Catalytic Performance ◽

Dry Reforming ◽

Dry Reforming Of Methane ◽

Alkaline Earth Metal ◽

Solution Combustion ◽

Alkaline Earth Metal Oxides

Alkali and alkaline earth metal oxides-promoted Ni/La2O3 catalysts synthesized by solution combustion synthesis revealed enhanced catalytic performance towards dry reforming of methane.

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