Fecl3 + Hcl = Hcl3 + Fecl2

Affiliations

1 College of Light Industry & Energy, Shaanxi University of Science và Technology, Shaanxi Province Key Lab of Papermaking Technology & Specialty Paper, Xi'an 710021, Shaanxi, PR China; State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, Guangdong, truyền bá Trung Quốc. Electronic address: lijinbao

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sust.edu.cn. 2 College of Light Industry & Energy, Shaanxi University of Science & Technology, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Xi'an 710021, Shaanxi, lăng xê China. 3 College of Light Industry and Energy, Shaanxi University of Science và Technology, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Xi'an 710021, Shaanxi, lăng xê China; State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, Guangdong, truyền bá Đài Loan Trung Quốc.

Affiliations

1 College of Light Industry & Energy, Shaanxi University of Science & Technology, Shaanxi Province Key Lab of Papermaking Technology & Specialty Paper, Xi'an 710021, Shaanxi, quảng cáo China; State Key Lab of Pulp và Paper Engineering, South Trung Quốc University of Technology, Guangzhou 510641, Guangdong, PR Trung Quốc. Electronic address: lijinbao

Xem thêm: Sinh Năm Kỷ Hợi Mệnh Gì, Tuổi Gì, Hợp Màu Gì, Hợp Tuổi Nào, Hướng Nào?

sust.edu.cn. 2 College of Light Industry and Energy, Shaanxi University of Science & Technology, Shaanxi Province Key Lab of Papermaking Technology và Specialty Paper, Xi'an 710021, Shaanxi, quảng bá China. 3 College of Light Industry and Energy, Shaanxi University of Science & Technology, Shaanxi Province Key Lab of Papermaking Technology và Specialty Paper, Xi'an 710021, Shaanxi, quảng cáo China; State Key Lab of Pulp & Paper Engineering, South China University of Technology, Guangzhou 510641, Guangdong, truyền bá Đài Loan Trung Quốc.

The effect of ultrasonic pretreatment coupled with HCl-FeCl3 catalyst was evaluated to hydrolyze celluđại bại amorphous regions. The ultrasonic pretreatment leads lớn cavitation that affects the morphology and microstructure of fibers, enhancing the accessibility of chemical reagent khổng lồ the loosened amorphous regions of celluthua. In this work, Fourier transsize infrared spectroscopy (FTIR) was used to identify characteristic absorption bands of the constituents và the crystallinity was evaluated by the X-ray diffraction (XRD) technique. The results indicated that appropriate ultrasonic pretreatment assisted with FeCl3 can enhance the acid hydrolysis of amorphous regions of celluthất bại, thus improving the crystallinity of the remaining hydrocelluthua thảm. It was observed that sonication samples that were pretreated for 300 W & đôi mươi min followed by acid hydrolysis had maximum of 78.9% crystallinity. The crystallinity was 9.2% higher than samples that were not subjected to lớn ultrasound. In addition, the average fines length decreased from 49 μm lớn 37 μm.


Keywords: Amorphous regions; Metal ion; Microcrystalline cellulose; Selective sầu acid hydrolysis; Ultrasonic treatment.