UPGRADING OF BIO-OIL MOLECULAR DISTILLATION FRACTION WITH SOLID ACID CATALYST
Molecular distillation technology has been adopted to obtain a bio-oil fraction rich in carboxylic acids and ketones. This unique bio-oil fraction was then upgraded with a La-promoted solid acid catalyst. Three washing pretreatments were used to prepare catalysts A, B, and C, with the intention of r...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
North Carolina State University
2011-05-01
|
| Series: | BioResources |
| Subjects: | |
| Online Access: | http://www.ncsu.edu/bioresources/BioRes_06/BioRes_06_3_2539_Guo_WXCZ_Upgrad_BioOil_Molec_Fraction_Catalyst_1661.pdf |
| _version_ | 1819073236526170112 |
|---|---|
| author | Lingjun Zhu Guohui Xu Shurong Wang Zuogang Guo Qinjie Cai |
| author_facet | Lingjun Zhu Guohui Xu Shurong Wang Zuogang Guo Qinjie Cai |
| author_sort | Lingjun Zhu |
| collection | DOAJ |
| description | Molecular distillation technology has been adopted to obtain a bio-oil fraction rich in carboxylic acids and ketones. This unique bio-oil fraction was then upgraded with a La-promoted solid acid catalyst. Three washing pretreatments were used to prepare catalysts A, B, and C, with the intention of reducing the amounts of residual sulfuric acid. Model reactions were used to estimate their catalytic activities and the residual amounts of sulfuric acid. Catalyst B, with washing after calcination, displayed higher catalytic activity (80.83%) and lower residual amount of sulfuric acid (50 μmol/g). The catalysts were characterized by techniques such as BET, XRD, and SEM to explain the differences in their catalytic activities. The optimum catalyst B was used in the upgrading of the bio-oil molecular distillation fraction. After upgrading, the corrosivity of the bio-oil fraction declined and its storage stability was improved. The carboxylic acid content in the upgraded bio-oil fraction decreased from 18.39% to 2.70%, while the ester content increased from 0.72% to 31.17%. The conversion of corrosive carboxylic acids to neutral esters reduced the corrosivity of the bio-oil fraction. Moreover, the ketones with unsaturated carbon-carbon double bonds (such as 2-cyclopenten-1-one, 3-methyl-2-cyclopenten-1-one, etc.) were converted into saturated compounds, which improved the stability of the bio-oil fraction. |
| first_indexed | 2024-12-21T17:50:25Z |
| format | Article |
| id | doaj.art-f17e41ffd12d46f6ad900ec1fc06b14c |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-12-21T17:50:25Z |
| publishDate | 2011-05-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-f17e41ffd12d46f6ad900ec1fc06b14c2022-12-21T18:55:23ZengNorth Carolina State UniversityBioResources1930-21262011-05-016325392550UPGRADING OF BIO-OIL MOLECULAR DISTILLATION FRACTION WITH SOLID ACID CATALYSTLingjun ZhuGuohui XuShurong WangZuogang GuoQinjie CaiMolecular distillation technology has been adopted to obtain a bio-oil fraction rich in carboxylic acids and ketones. This unique bio-oil fraction was then upgraded with a La-promoted solid acid catalyst. Three washing pretreatments were used to prepare catalysts A, B, and C, with the intention of reducing the amounts of residual sulfuric acid. Model reactions were used to estimate their catalytic activities and the residual amounts of sulfuric acid. Catalyst B, with washing after calcination, displayed higher catalytic activity (80.83%) and lower residual amount of sulfuric acid (50 μmol/g). The catalysts were characterized by techniques such as BET, XRD, and SEM to explain the differences in their catalytic activities. The optimum catalyst B was used in the upgrading of the bio-oil molecular distillation fraction. After upgrading, the corrosivity of the bio-oil fraction declined and its storage stability was improved. The carboxylic acid content in the upgraded bio-oil fraction decreased from 18.39% to 2.70%, while the ester content increased from 0.72% to 31.17%. The conversion of corrosive carboxylic acids to neutral esters reduced the corrosivity of the bio-oil fraction. Moreover, the ketones with unsaturated carbon-carbon double bonds (such as 2-cyclopenten-1-one, 3-methyl-2-cyclopenten-1-one, etc.) were converted into saturated compounds, which improved the stability of the bio-oil fraction.http://www.ncsu.edu/bioresources/BioRes_06/BioRes_06_3_2539_Guo_WXCZ_Upgrad_BioOil_Molec_Fraction_Catalyst_1661.pdfMolecular distillationBiomassBio-oilFractionsUpgrading |
| spellingShingle | Lingjun Zhu Guohui Xu Shurong Wang Zuogang Guo Qinjie Cai UPGRADING OF BIO-OIL MOLECULAR DISTILLATION FRACTION WITH SOLID ACID CATALYST BioResources Molecular distillation Biomass Bio-oil Fractions Upgrading |
| title | UPGRADING OF BIO-OIL MOLECULAR DISTILLATION FRACTION WITH SOLID ACID CATALYST |
| title_full | UPGRADING OF BIO-OIL MOLECULAR DISTILLATION FRACTION WITH SOLID ACID CATALYST |
| title_fullStr | UPGRADING OF BIO-OIL MOLECULAR DISTILLATION FRACTION WITH SOLID ACID CATALYST |
| title_full_unstemmed | UPGRADING OF BIO-OIL MOLECULAR DISTILLATION FRACTION WITH SOLID ACID CATALYST |
| title_short | UPGRADING OF BIO-OIL MOLECULAR DISTILLATION FRACTION WITH SOLID ACID CATALYST |
| title_sort | upgrading of bio oil molecular distillation fraction with solid acid catalyst |
| topic | Molecular distillation Biomass Bio-oil Fractions Upgrading |
| url | http://www.ncsu.edu/bioresources/BioRes_06/BioRes_06_3_2539_Guo_WXCZ_Upgrad_BioOil_Molec_Fraction_Catalyst_1661.pdf |
| work_keys_str_mv | AT lingjunzhu upgradingofbiooilmoleculardistillationfractionwithsolidacidcatalyst AT guohuixu upgradingofbiooilmoleculardistillationfractionwithsolidacidcatalyst AT shurongwang upgradingofbiooilmoleculardistillationfractionwithsolidacidcatalyst AT zuogangguo upgradingofbiooilmoleculardistillationfractionwithsolidacidcatalyst AT qinjiecai upgradingofbiooilmoleculardistillationfractionwithsolidacidcatalyst |