APPLIED ENERGY
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2024
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IF 10.1
Yingjie Niu,Ting Li,Ali Hassan Bhatti,Jiaqi Qu,Xin Zhou,Li Luo,Francesco Barzagli,Chao'en Li,Rui Zhang
The use of solid acid catalysts for sorbent regeneration is an emerging approach to improve the energy efficiency of CO 2 capture processes. In this study, fly ash (FA), an industrial byproduct rich in acid/base sites, was chosen as a support material for the solid acid SO 4 2− /ZrO 2 (SZ) in the preparation of SZ@FA composite catalysts. Three catalysts with different mass ratios between SZ and FA were synthesized and evaluated in the regeneration process at 88 °C of a CO 2 -saturated MEA solution. Their desorption performance, expressed as CO 2 desorption rate, amount of CO 2 desorbed , and heat duty, was then compared with that obtained with unmodified FA, ZrO 2, and in the absence of catalysts (blank), under identical operating conditions. Compared to the uncatalyzed system, the SZ@FA composite catalysts showed significantly better desorption performance. In particular, SZ@FA-1/2 provided the highest values of desorption rate and cyclic capacity while reducing energy consumption by 45.4% compared to the blank system. It also demonstrated stability over 20 consecutive absorption-desorption cycles. Comparison with other reported catalysts highlighted the high performance of SZ@FA-1/2, particularly in terms of relative heat duty reduction, positioning it as a cost-effective and environmentally friendly choice for post-combustion capture applications.
研究领域:
化学工程
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环境科学
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产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2017
·Vol. 19
·期 16
·3844-3850
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IF 9.125
Yucai He,Yun Ding,Cuiluan Ma,Junhua Di,Chunxia Jiang,Aitao Li
One-pot furfuralcohol (FOL) production via dehydration of corncob-derived xylose followed by bioreduction of furfural has been described. The synthesized biocompatible solid acid catalyst SO42−/SnO2-attapulgite has been characterized and used for the dehydration of xylose-rich hydrolysate, and the highest furfural yield of 44% is achieved when employing 3.6 wt% catalyst loading at 170 °C for 20 min. The recombinant Escherichia coli CCZU-A13 harboring a NADH-dependent reductase (SsCR) is found to catalyze the bioreduction of furfural to FOL, the whole-cell catalyst could tolerate as high as 300 mM furfural substrate to give 221 mM FOL after 12 h of reaction under the optimum conditions (1.0 mM glucose per mM furfural, 30 °C, pH 6.5, 0.1 g wet cells per mL). The two processes are successfully combined in a one-pot manner to transform the xylose-rich hydrolysate to furfural, and then to FOL with 44% yield based on the starting material xylose (100% FOL yield for the bioreduction step). Finally, recycling experiments for the carrageenan immobilized whole-cell and solid acid catalyst in one-pot FOL production are conducted; both catalysts show excellent recyclability and no obvious decrease in activity is detected after 5 cycles of reaction. The developed one-pot chemo-enzymatic approach is greatly useful for practical green FOL production from renewable biomass resources.
研究领域:
生物化学
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绿色化学
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DOI
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 152
·期 11
·3453-3464
·
IF 2.936
Zhao Mengqi,Pan Zhiquan,Chen Qingrong,Zhou Hong
Diosgenin is an important intermediate of drugs, the special structure similar to hormone determines its important position in drug synthesis. Diosgenin was generally obtained by sulfuric acid hydrolysis of dioscorea, which produced too much acid wastewater, and caused environmental issues. A new solid acid based on TiO 2 was designed and synthesized through the sulfonation of the prepared TiO 2 , the structure was fully characterized by FTIR, SEM, EDX, XPS and XRD. Under the optimized conditions, the yield of diosgenin reached 30.75%, the value was much higher than that of H 2 SO 4 of the same quality. To explore the factors that affect the yield, the usage amount of the solid acid, the temperature, the solvent volume and the extraction time were taken into the analysis, and the results of the recycling experiments indicated that the prepared solid acid can be used for three time and maintain its high activity. A highly efficient solid acid catalyst for diosgenin extraction from saponins was successfully synthesized, and the extraction method was environmentally friendly. Graphical Abstract
研究领域:
药物化学
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环境科学
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DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Yuncong Li,Songdang Zhang,Zao Li,Heng Zhang,Hu Li,Song Yang
Biodiesel is being deemed a kind of important renewable energy source and also shows the great potential to replace fossil fuels to respond to global primary energy demands. However, by-product water generated during the esterification reaction of biodiesel production is not conducive to the forward progress of the reaction, and even affects the pristine structure and activity of the employed catalytic material. In this work, the hydrophobic polymeric bio-based solid acid catalyst FDCA/SA-UiO-66(Zr) was prepared by a facile grinding method using biomass-derived stearic acid (SA) and 2,5-furandicarboxylicacid (FDCA) as hydrophobic ligand and green organic linker, respectively. Accordingly, the corresponding characterization results showed that the relevant material had a good particle shape along with a highly hydrophobic network (136.4°), wherein the significant hydrophobic environment was determined to promote the adsorption of lipophilic acid and the desorption of water on the Lewis acid site. Compared with traditional heterogeneous and homogeneous acid catalysts, just at a low temperature (60.2 °C, 98.4% yield), FDCA/SA-UiO-66(Zr) exhibited superior or equivalent catalytic performance in the esterification of FFAs for biodiesel manufacture. More importantly, thanks to the stable skeleton structure of UiO-66(Zr), the catalyst demonstrated a stable structure and good reusability during 6 consecutive recycles (92.5% biodiesel yield).
研究领域:
化学工程
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可再生能源
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催化材料
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DOI
高影响因子
ADVANCES IN POLYMER TECHNOLOGY
·
2019
·
IF 2.663
Anping Wang,Heng Zhang,Hu Li,Song Yang
Biomass-based polymers are eco-friendly, nontoxic and biodegradable materials. In this work, in order to prepare green, low-cost and high-efficient catalysts under mild conditions, we chose biomass-based chitosan as raw material and prepared a new solid acidic catalyst by an acid functionalization method. FT-IR, XRD, SEM, TGA, BET, neutralization titration and other analytical methods were used to characterize the catalyst. The results showed that CS-SO3H morphology exhibited a sphere of about 10 μm diameter, and the acid density was as high as 3.81 mmol/g. The catalyst exhibits good catalytic activity in the esterification of oleic acid and methanol, which is a model reaction of the pre-esterification process in the preparation of biodiesel from feedstocks with high acid values. Under the optimum reaction conditions (15/1 methanol/oleic acid mole ratio and 3 wt% catalyst dosage at 75°C for 3 h), the yield of methyl oleate can reach 95.7%. Even if the mass of oleic acid in the reactant increased to 20 g, solid acid showed good catalytic performance, and the yield of methyl oleate was 94.4%. After four times of reuse, the yield of the catalyst can still reach 85.7%, which indicates that the catalyst has good catalytic activity and stability, and has potential application prospects.
研究领域:
化学工程
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可再生资源
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催化材料
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产品关联
DOI
高影响因子
ENERGY
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2022
·
IF 8.857
Bingxin Zhang,Ming Gao,Weiqi Tang,Xiaona Wang,Chuanfu Wu,Qunhui Wang,Siu Ming Cheung,Xiankun Chen
Effect of various reagents (i.e. H 2 O 2 , H 2 SO 4 , H 3 PO 4 and their mixtures) pretreatments on esterification activities of carbon-based solid acid catalysts synthesised by one-step sulphonation (150 °C for 4 h) was investigated. The results demonstrated that sulphonic acid density of catalyst positively correlated with the esterification efficiency and the high lignin content of the biomass stimulated the loading of sulphonic acid groups. The bamboo powder pretreated with 1% H 2 SO 4 yielded the highest lignin content (from 26.4% to 33.0%). The corresponding catalyst yielded the highest esterification efficiency (97.3%), which decreased to 82.9% after four cycles. On the other hand, the bamboo powder pretreated by H 2 O 2 and 30% H 3 PO 4 brought little effect on the increment of lignin content and esterification efficiency of the catalysts. Therefore, biomass pretreatment could be a solution of disposal acidic wastewater (like catalyst sulphonation wastewater) by reusing it as pretreatment reagents and improving the esterification efficiency of the catalysts.
研究领域:
化学工程
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催化材料
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生物质能
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DOI
高影响因子
BIOMASS & BIOENERGY
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2020
·
IF 3.551
Shuyuan Jin,Jingwei Gong,Chao Yang,Yi Cheng,Jie Lu,Qiang Yang,Haisong Wang
Effective hydrolysis of cellulose to glucose is a crucial step to utilize lignocellulosic biomass for fuels and chemicals. In this study, we adopted the simple Blanc chloromethylation of commercially available Amberlyst-15 to fabricate enzyme-mimic solid acid (A-15-Cl) for cellulose hydrolysis. The results indicated that the chlorine group in A-15-Cl adsorbed cellulose and particularly oligosaccharides through hydrogen bonding while the sulfonic acid group cleaved the β-1,4 glycosidic bonds in cellulose and oligosaccharides. Due to the synergistic effect between the chlorine (adsorbing cellulose) and sulfonic acid (hydrolyzing cellulose) groups, A-15-Cl effectively hydrolyzed cellulose in water achieving a 67.2% glucose yield at 170 °C in 2 h. Moreover, A-15-Cl can be readily separated from the reaction medium by an 80-mesh screen for reuse at least five times without significant loss of catalytic activity .
研究领域:
生物化学
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可再生资源
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Mengting Chen,Wenbao Liu,Danyang Ren,Yunlin An,Chang Shu,Shengguang Zhang,Wenjun Liang,Jianchao Sun,Feiyu Kang,Fuyi Jiang
At present, aqueous rechargeable Zn–MnO 2 batteries have attracted widespread attention as green potential application for renewable energy storage devices. MnO 2 cathode has great potential for application, but its proton reaction results in side reactions of cathode, electrolyte consumption, and dramatic pH value changes, suffering from capacity degradation. To address the issues caused by proton deficit, a proton–limited domain strategy is proposed by integrating solid acids (Sulfonic acid type polystyrene–divinylbenzene, SATP) with proton exchange reactions into MnO 2 . SATP can act as a new proton source increasing the amount of H + and reducing the generation of zinc hydroxide sulfate, by–product of proton at the cathode interface, via proton exchange reactions of -HSO 3 – group. As a result, Zn–MnO 2 /SATP battery delivered with excellent rate performance (218.4 mAh g –1 at 2 A g –1 ) and high cycling stability (the retained capacity of 115.8 mAh g –1 after 500 cycles at a current density of 1 A g –1 . This work provides an innovative strategy for high performance aqueous Zn–MnO 2 batteries.
研究领域:
材料科学
·
能源存储
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产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
·
2015
·Vol. 92
·期 4
·495-502
·
IF 1.541
Fu Xiao-bo,Chen Jie,Song Xue-li,Zhang Yuan-ming,Zhu Yi,Yang Jun,Zhang Cheng-wu
A novel carbon solid acid catalyst was prepared by incomplete hydrothermal carbonization of β-cyclodextrin into small polycyclic aromatic carbon sheets, followed by the introduction of –SO 3 H groups via sulfonation with sulfuric acid. The physical and chemical properties of the catalyst were characterized in detail. The catalyst simultaneously catalyzed esterification and transesterification reactions to produce biodiesel from high free fatty acid (FFA) containing oils (55.2 %). For the as-prepared catalyst, 90.82 % of the oleic acid was esterified after 8 h, while the total transesterification yield of high FFA containing oils reached 79.98 % after 12 h. By contrast, the obtained catalyst showed comparable activity to biomass (such as sugar, starch, etc.)-based carbon solid acid catalyst while Amberlyst-15 resulted in significantly lower levels of conversion, demonstrating its relatively high catalytic activity for simultaneous esterification and transesterification. Moreover, as the catalyst can be regenerated, it has the potential for use in biodiesel production from oils with a high FFA content.
研究领域:
化学工程
·
可再生能源
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产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2024
·
IF 2.3
Lv Shijun,Deng Xiaoya,Zhu Peiwen,Ruan Lingyu,Tao Yuheng,Wang Liqun,Zhu Jie,Qing Qing
Sulfonated carbon catalysts exhibit superior catalytic performance for production of biobased chemicals, but the catalyst preparation approaches are still suffered from high corrosion and possible pollution risks. In this paper, lignin extracted from corn stover was used to prepare lignin-based activated carbon, which was then subjected to grafting modification by sulfur dioxide nonthermal plasma method to construct a novel lignin-derived solid acid catalyst (LP-LDSA). The catalytic performances of LP-LDSA were further determined by dehydration of fructose to produce 5-HMF in a biphasic solvent system composed by dimethyl sulfoxide (DMSO) and water. Under the optimal conditions, the 5-HMF yield and reaction selectivity were 88.9% and 89.4%, respectively. This LP-LDSA catalyst also exhibited excellent stability and reusability in five sequential reaction batches. This method has advantages of shorter solid acid preparation duration, lower energy consumption, and higher catalytic stability, presenting an innovative and green method for sulfonation production of solid acid catalyst. Graphical Abstract
研究领域:
生物质化学
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催化材料科学
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产品关联
DOI
高影响因子
FUEL
·
2016
·
IF 3.611
Mei-Xia Zhao,Xian-Yong Wei,Meng Qu,Jiao Kong,Zhan-Ku Li,Jing Liu,Zhi-Min Zong
A novel solid acid was prepared by impregnating trifluoromethanesulfonic acid (TFMSA) onto mesoporous ZrO 2 coated attapulgite (MPZCA) via one-pot synthesis method. Dibenzyl ether (DBE) was used as a coal-related model compound to evaluate the catalytic activity of TFMSA/MPZCA for cleaving C alk –O bridged bonds in low-rank coals. The results show that DBE conversion over TFMSA/MPZCA could reach 100% at 160 °C in C 2 H 5 OH without charging H 2 . TFMSA/MPZCA proved to be stable after 4 cycles with only slight loss in catalytic activity. Moreover, a H + transfer mechanism was proposed, which reasonably deduces possible pathways for DBE hydrocracking over TFMSA/MPZCA.
研究领域:
化学工程
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催化科学
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2025
·Vol. 155
·期 5
·1-14
·
IF 2.4
Wang Xiangke,Meng Xuan,Shi Li,Liu Naiwang,Wang Jiyu
In the tert-butyl removal reaction, solid acid catalysts have emerged as a preferred alternative to liquid acid catalysts due to their environmentally friendly advantages. Various zeolites, such as ZSM-5, MCM-41, USY, and H beta, as well as mesoporous materials, such as γ-Al 2 O 3 and active clay were employed for the first time to prepare m-cresol through the tert-butyl removal reaction of 4,6-di-tert-butyl-m-cresol (4,6-DBMC). γ-Al 2 O 3 and active clay catalysts were found to have excellent catalytic performance in this reaction. The thermodynamic properties of the tert-butyl removal reaction of 4,6-DBMC were studied. Under different temperature and solvent conditions, the product distribution was investigated. A proposed reaction pathway and mechanism were proposed. And through cyclic experiments, the stability of γ-Al 2 O 3 and active clay catalysts was investigated separately. After six cycles, the m-cresol yield for active clay catalyst was still maintained at about 90%. The causes of deactivation of the two catalysts were analyzed. After regeneration, both catalysts exhibited good regeneration performance. This study offers a basis for the selection of solid acid catalysts for the tert-butyl groups removal of 4,6-DBMC. Graphical abstract
研究领域:
化学工程
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催化科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）