99915-14-7Relevant articles and documents
The construction of novel and efficient hafnium catalysts using naturally existing tannic acid for Meerwein-Ponndorf-Verley reduction
Deng, Lijuan,Hao, Jianxiu,He, Runxia,Li, Na,Liu, Quansheng,Wang, Xiaolu,Zhao, Hongye,Zhi, Keduan,Zhou, Huacong
, p. 6944 - 6952 (2020/03/03)
The conversion of carbonyl compounds into alcohols or their derivatives via the catalytic transfer hydrogenation (CTH) process known as Meerwein-Ponndorf-Verley reduction is an important reaction in the reaction chain involved in biomass transformation. The rational design of efficient catalysts using natural and renewable materials is critical for decreasing the catalyst cost and for the sustainable supply of raw materials during catalyst preparation. In this study, a novel hafnium-based catalyst was constructed using naturally existing tannic acid as the ligand. The prepared hafnium-tannic acid (Hf-TA) catalyst was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and thermogravimetry (TG). Hf-TA was applied in the conversion of furfuraldehyde (FD) to furfuryl alcohol (FA) using isopropanol (2-PrOH) as both the reaction solvent and the hydrogen source. Both preparation conditions and the effects of the reaction parameters on the performance of the catalyst were studied. Under the relatively mild reaction conditions of 70 °C and 3 h, FD (1 mmol) could be converted into FA with a high yield of 99.0%. In addition, the Hf-TA catalyst could be reused at least ten times without a notable decrease in activity and selectivity, indicating its excellent stability. It was proved that Hf-TA could also catalyze the conversion of various carbonyl compounds with different structures. The high efficiency, natural occurrence of tannic acid, and facile preparation process make Hf-TA a potential catalyst for applications in the biomass conversion field.
Synthesis of Guerbet ionic liquids and extractants as β-branched biosourceable hydrophobes
Damilano, Giacomo,Binnemans, Koen,Dehaen, Wim
supporting information, p. 9778 - 9791 (2019/12/02)
This study investigates the synthesis of β-branched amines and β-branched quaternary ammonium chloride ionic liquids as novel extractants. The synthesis methodology was tailored to facilitate the reaction scale-up and the use of biorenewable starting materials. The developed process is an overall green, easy and straightforward synthesis of β-branched amines, and ammonium salts, starting from linear aldehydes. In order to evaluate the potential of the synthesised materials in applications, the rheology, density, thermal stability, chemical stability, phase transitions, and mutual solubility with water of the novel extractants was studied.
Synthesizing method of 2-butyl-1-octanol
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Paragraph 0026-0027, (2018/07/15)
The invention discloses a synthesizing method of 2-butyl-1-octanol. The method includes the following steps of conducting an aldol condensation reaction with n-caproaldehyde as the initiator to obtain2-butyl-2-octenal, wherein a catalyst in the aldol condensation reaction is barium hydroxide; conducting a primary reduction reaction on 2-butyl-2-octenal to obtain a mixture of aldehyde and alcohol,and conducting a secondary reduction reaction on the mixture of aldehyde and alcohol to obtain 2-butyl-1-octanol, wherein a reducing agent in the primary reduction reaction is palladium on carbon, and a reducing agent in the secondary reduction reaction is sodium borohydride. The method is easy to operate, few byproducts are produced, yield is high, the requirements for devices are not high, andindustrial production is easy.
