Activated-Carbon-Supported Phosphotungstic Acid as Novel Heterogeneous Catalysts for Cationic Polymerization of β-Pinene

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Song Cao¹  Pengfei Li¹  Taishun Zhang¹  Wei Zeng¹  Fuhou Lei¹  Shuo Wang¹  Zuguang Liu¹ 

[1] College of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities

关键词: Heterogeneous Catalyst;    Cationic Polymerization;    Phosphotungstic Acid;    Activated Carbon;    β-Pinene;   

DOI  :  10.1252/jcej.13we330

来源: Maruzen Company Ltd

【 摘 要 】

References(23)Cited-By(1)Activated-carbon-supported phosphotungstic acid (HPW/C) catalysts were prepared and characterized by FT-IR spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and the Brunauer–Emmett–Teller (BET) method. The catalytic performance of HPW/C for β-pinene polymerization was also investigated. The characterization results show that the Keggin structure of HPW does not change after being supported on the activated carbon. The tiny particles of HPW are distributed amorphously and uniformly on the surface of the activated carbon. HPW can interact strongly with surface oxygen-containing groups on the activated carbon. The immobilization of HPW leads to a decrease in the specific surface area and total porous volume of the activated carbon. The polymerization conditions were optimized as follows: loading amount 34.2 wt%; dosage of catalysts 0.6 g; reaction temperature 0–10°C; β-pinene 3 mL; solvent 7 mL; reaction time 2 h. Under these conditions, the polymer yield was up to 73.0%, and the number-average molecular weight was about 860.

【 授权许可】

Unknown