One-Pot Synthesis of Al-P-O Catalysts and Their Catalytic Properties for O-Methylation of Catechol and Methanol

A series of Al-P-O catalysts (Al-xP-O) were prepared using a P123-assisted one-pot method at different P/Al molar ratios and used for O-methylation of catechol and methanol. The influences of the P/Al molar ratio and P123 addition on catalyst structure and surface acid-base characteristics were investigated in detail. Increasing the P/Al molar ratio more favored crystalline aluminophosphate. The P123-assisted Al3+ and PO43− are known to be stabilized through weak steric force so that the formation of crystalline aluminophosphate could be inhibited at higher P/Al molar ratios. The results showed that the prepared Al-P-O catalysts possessed appropriate weak acid and weak base sites, which was beneficial to the reaction of catechol and methanol. The Al-1.1P-O catalyst synthesized with the assistance of P123 exhibited superior catalytic performances, with 52.5% catechol conversion and higher guaiacol selectivity of 97.6%.

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One-Pot Synthesis of Bi/Fe3O4 and Its Catalytic Performances for 4-Nitrophenol Reduction

BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS ◽

10.9767/bcrec.12.1.621.89-95 ◽

2017 ◽

Vol 12 (1) ◽

pp. 89 ◽

Cited By ~ 5

Author(s):

Ke-ying Cai ◽

Yu-Sheng Liu ◽

Yang Xu ◽

Huimin Zhou ◽

Lingxia Zhang ◽

...

Keyword(s):

Reaction Engineering ◽

Molar Ratio ◽

X Ray Diffraction ◽

One Pot ◽

X Ray ◽

One Pot Synthesis ◽

Novel Approach ◽

Nitrophenol Reduction ◽

Bismuth Chloride ◽

Catalytic Performances

A novel approach was successfully developed for the catalyst Bi-deposited Fe3O4 magnetic nanoparticles, which was used in the degradation of 4-nitrophenol (4-NP). The Bi/Fe3O4 composite was prepared via a one-pot process from ferrous sulfate and bismuth chloride using hydrazine hydrate as a reducing agent. The catalyst was characterized by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. In the composite pure Fe3O4 particles were synthesized and bismuth particles were well dispersed. The catalytic performances were investigated for the reduction of 4-NP with sodium borohydride. The catalyst has higher activity when Bi/Fe molar ratio is 1:4 in the composite and the rate constant k is about 0.611 min-1. The catalyst has good reusability which can be used 10 cycles without obvious deactivation. Furthermore, the catalyst can be easily separated by an external magnetic field. Copyright © 2017 BCREC GROUP. All rights reservedReceived: 11st August 2016; Revised: 20th December 2016; Accepted: 21st December 2016How to Cite: Cai, K.Y., Liu, Y.S., Xu, Y., Zhou, H., Zhang, L., Cui., Y. (2017). One-Pot Synthesis of Bi/Fe3O4 and Its Catalytic Performances for 4-Nitrophenol Reduction. Bulletin of Chemical Reaction Engineering & Catalysis, 12 (1): 89-95 (doi:10.9767/bcrec.12.1.621.89-95)Permalink/DOI: http://dx.doi.org/10.9767/bcrec.12.1.621.89-95

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One-pot synthesis of furfural derivatives from pentoses using solid acid and base catalysts

Catalysis Science & Technology ◽

10.1039/c3cy00980g ◽

2014 ◽

Vol 4 (4) ◽

pp. 971-978 ◽

Cited By ~ 29

Author(s):

Mahiro Shirotori ◽

Shun Nishimura ◽

Kohki Ebitani

Keyword(s):

Solid Acid ◽

Acid Base ◽

One Pot ◽

Amberlyst 15 ◽

Base Catalysts ◽

One Pot Synthesis ◽

Combined Use ◽

Acid And Base

One-pot synthesis of (2-furanylmethylene)malononitrile, a Knoevenagel product of furfural with malononitrile, from xylose efficiently proceeded by combined use of acid Amberlyst-15 and acid-base Cr/hydrotalcites in 44% yield.

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