Wu, Jie Kim, Kwang Ho Jeong, Keunhong Kim, Dongwoo Kim, Chang Soo Ha, Jeong-Myeong Chandra, Richard P. Saddler, Jack N. 2024-01-19T15:05:18Z 2024-01-19T15:05:18Z 2021-09-05 2021-03 0960-8524 https://pubs.kist.re.kr/handle/201004/117321 Previous work has shown that sulfonation and oxidation of chemi-thermomechanical pulps (CTMPs) significantly enhanced enzyme accessibility to cellulose while recovering the majority of carbohydrates in the water-insoluble component. In the work reported here, modified (sulfonated and oxidized) CTMPs derived from hard-and softwoods were used to produce a DL-mix of lactic acid via a chemo-catalytic approach using lanthanide triflate (Ln (OTf)(3)) catalysts (Ln = La, Nd, Er, and Yb). It was apparent that sulfonation and oxidation of chemithermomechanical pulps (CTMPs) also enhanced Ln(OTf)(3) catalyst accessibility to the carbohydrate components of the pulps, with the Er(OTf)(3) catalysts resulting in significant lactic acid production. Under optimum conditions (250 degrees C, 60 min, 0.5 mmol catalyst g-1 biomass), 72% and 67% of the respective total carbohydrate present in the hard-and-softwood CTMPs could be converted to lactic acid compared to the respective 59% and 51% yields obtained after energy-intensive ball milling. English Elsevier BV The production of lactic acid from chemi-thermomechanical pulps using a chemo-catalytic approach Article 10.1016/j.biortech.2021.124664 1 Bioresource Technology, v.324 Bioresource Technology 324 N scie scopus 000614251500014 2-s2.0-85099439801 Agricultural Engineering Biotechnology & Applied Microbiology Energy & Fuels Agriculture Biotechnology & Applied Microbiology Energy & Fuels Article Chemi-thermomechanical pulp LanthanideTriflates Accessibility Carbohydrates Lactic Acid