TY - JOUR
T1 - A hierarchical MnOx/ZSM-5 heterogeneous catalyst for the conversion of cellulose from mahogany wood to levulinic acid
AU - Rahayu, D. U.C.
AU - Nurani, D. A.
AU - Rochmah, L. N.H.
AU - Antra, N. F.
AU - Krisnandi, Y. K.
N1 - Funding Information:
4. Co n c lu sio n s In this work, the optimization reaction of cellulose conversion from mahogany wood into levulinic acid was studied using a MnOx/ZSM-5 heterogeneous catalyst. Cellulose from mahogany wood was obtained through alkali and oxidative delignification. Alkali delignification using NaOH decreased the lignin content from 31.82% to 15.58%, and further oxidative delignification using NaOCl decreased the lignin content to 6.4%. HPLC analysis showed the highest cellulose conversion to levulinic acid was 2.44% with 20% H2O2 (v/v) and 30% H3PO4 (v/v) after 8 h of reaction time. With the absence of the 5-HMF peak in the HPLC analysis, this work demonstrated that the MnOx/ZSM-5 catalyst exhibits good selectivity for levulinic cai.d A ck n o w led g e me n ts This work was supported by International Collaboration Research Grant 2014 from Universitas Indonesia and PUPT BOPTN 2016 research grant No. 1136/UN2/R12/HKP/05.00/2016 from Ministry of Research, Technology and Higher Education (Kemenristekdikti) Republic of Indonesia. Authors wouldliketothank iEango w( eiwnago.cowm) for.the Englishlanguagereview.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/2/22
Y1 - 2019/2/22
N2 - At present, lignocellulose holds significant potential as a renewable biomass resource. Lignocellulose can be converted to levulinic acid, one of the most important platform chemicals used in several applications. The forestry of mahogany wood produces abundant waste in the urban areas of Indonesia. This waste is a source of biomass, containing the major chemical constituents of holocellulose, α-cellulose, and lignin in proportions of 53.37%, 33.05%, and 31.82%, respectively. Pretreatment processes of mahogany wood were conducted through dewaxing processes followed by delignification using NaOH and NaOCl to pre-concentrate the cellulose substrate. The delignification processes using NaOH and NaOCl reduced the lignin content to 15.58% and 6.40%, respectively, from 31.82% of dewaxed-mahogany wood. The cellulose conversion from mahogany wood to levulinic acid was performed using the MnOx/Hi-ZSM-5 heterogeneous catalyst in the presence of H2O2, and H3PO4 solutions. The parameters of cellulose conversion, including conversion time and concentration of H3PO4 and H2O2, were also studied, and HPLC analysis revealed the highest cellulose conversion to levulinic acid to be 2.44% with 20% H2O2, (v/v) and 30% H3PO4. (v/v) after 8 h of reaction time.
AB - At present, lignocellulose holds significant potential as a renewable biomass resource. Lignocellulose can be converted to levulinic acid, one of the most important platform chemicals used in several applications. The forestry of mahogany wood produces abundant waste in the urban areas of Indonesia. This waste is a source of biomass, containing the major chemical constituents of holocellulose, α-cellulose, and lignin in proportions of 53.37%, 33.05%, and 31.82%, respectively. Pretreatment processes of mahogany wood were conducted through dewaxing processes followed by delignification using NaOH and NaOCl to pre-concentrate the cellulose substrate. The delignification processes using NaOH and NaOCl reduced the lignin content to 15.58% and 6.40%, respectively, from 31.82% of dewaxed-mahogany wood. The cellulose conversion from mahogany wood to levulinic acid was performed using the MnOx/Hi-ZSM-5 heterogeneous catalyst in the presence of H2O2, and H3PO4 solutions. The parameters of cellulose conversion, including conversion time and concentration of H3PO4 and H2O2, were also studied, and HPLC analysis revealed the highest cellulose conversion to levulinic acid to be 2.44% with 20% H2O2, (v/v) and 30% H3PO4. (v/v) after 8 h of reaction time.
KW - cellulose
KW - hierarchical Mn/ZSM-5
KW - levulinic acid
KW - mahogany wood
UR - http://www.scopus.com/inward/record.url?scp=85066816020&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/496/1/012055
DO - 10.1088/1757-899X/496/1/012055
M3 - Conference article
AN - SCOPUS:85066816020
SN - 1757-8981
VL - 496
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012055
T2 - 2nd International Conference on Current Progress in Functional Materials 2017, ISCPFM 2017
Y2 - 8 November 2017 through 9 November 2017
ER -
