INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Liuxing She,Lei Peng,Hang Yuan,Tianrong Zhu,Qiang Fu,Zaikun Wu
The absorption kinetics of CO2 into a novel nonaqueous mixture of 2-amino-2-methyl-1-propanol (AMP) and piperazine (PZ) was studied at atmospheric pressure. The effects of AMP/PZ molar ratio, total concentration, absorption temperature, and inlet flow rate were discussed. The results showed that the composite absorbent with an AMP/PZ ratio of 6:4 had a good effect on the CO2 absorption at 293 K. Unlike relevant reports at home and abroad, the solubility of CO2 in the 1-pentanol solution of AMP and PZ (AMP-PZ-Pentanol) was calculated based on a solution rule model and relevant data from Aspen Plus. The absorption kinetics of CO2 into nonaqueous composite absorbent was analyzed by a double stirred-cell absorber. It shows the enhancement factor increases with the increasing of total concentration but decreases with the increasing of absorption temperature. The absorption mechanism of CO2 in AMP-PZ-Pentanol was determined to be the formation of carbamate by FT-IR, 13C NMR, and XRD analysis. Based on the vapor–liquid equilibrium theory, the reaction heat of CO2 into the phase change absorbent was calculated to be 9.30 KJ mol–1. The results show that the composite absorbent has a lower reaction heat than any single component in it. The desorption experiment of saturated solution shows that the composite absorbent can be completely regenerated in a short period of time, which meets the industrial requirements for CO2 absorbents and will provide a theoretical basis for further industrial applications of this type of absorbent.
研究领域:
化学工程
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Shuxing Zhang,Xiaoshu Ding,Yanji Wang
5-Amino-1-pentanol is an important pharmaceutical intermediate used in the synthesis of anti-inflammatory and anticancer drugs. The direct hydrogenolysis of furfurylamine to 5-amino-1-pentanol has the advantages of a simple process route and high atom utilization. In this paper, for Pt/ZrO2 catalysts, the effects of different Pt loading and calcination temperatures on catalyst activity, selectivity, and surface properties such as Pt nanoparticle size, acidity and alkalinity, and the ratio of Pt0/(Pt0+Pt2+) were investigated. Through the study of the relationship between catalyst preparation conditions, furfurylamine hydrogenolysis reaction performance, and surface properties, it was found that moderate Pt nanoparticle size, higher Pt0/(Pt0+Pt2+) ratio, and more acidic sites favored furfurylamine hydrogenolysis. The higher number of basic sites favors the dispersion of Pt metal. The results of in situ FTIR show that the amino group of furfurylamine is adsorbed on the acidic site of Pt/ZrO2, and the furan ring is adsorbed on Pt nanoparticles, which is beneficial to the hydrogenolysis of furfurylamine.
研究领域:
催化化学
·
药物合成
✓ 已验证
产品关联
DOI
高影响因子
ACTA ASTRONAUTICA
·
2025
·
IF 3.4
Sinan Feng,Zhe Zhu,Hefeng Lin,Liyan Chen,Xiaoxia Wang,Dawen Zeng
Boron-based nanofluid fuel demonstrates a high energy density due to the presence of B nanoparticles (BNPs). This paper presents a comprehensive study of nanofluid fuels composed of kerosene, 1-pentanol, and BNPs through both theoretical analysis and experimental investigation. The 1-pentanol not only possesses a high heat value and physical properties, such as density and viscosity, that are comparable to those of kerosene, but it also serves as an effective dispersing medium for BNPs. Furthermore, test results examining the impact of 1-pentanol content on the stability of BNPs show that a concentration of 10 vol% 1-pentanol significantly inhibits the contact and aggregation of BNPs and makes them stably dispersed in fuel. Single droplet combustion experiments demonstrate that the 10B/K90P10 sample exhibits the best all-around combustion characteristics with an ignition delay time of 35 ms and a liquid phase combustion rate of 1.5537 mm 2 /s. Finally, a mathematical model has been developed to analyze and validate the combustion performance of boron-based alcohol-containing nanofluid fuels. The predicted ignition delay time, liquid phase combustion rate, and microexplosion time are within acceptable limits of their experimental values. This work provides valuable insights for the research and application of boron-based alcohol-containing nanofluid fuels.
研究领域:
能源科学
·
燃烧工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 33
·期 32
·325601
·
IF 3.953
Xuexue Liu,Xiang Zhang,Jian Chen,Changhao Zhang,Songke Feng,Weiguo Zhang
Dendritic fibrous nanosilica (DFNS) is a suitable nano-carrier for loading pesticides with radially oriented pores and a large surface area. The microemulsion method is standard method to prepare DFNS, and 1-pentanol is taken to replace cyclohexane as an oil solvent due to its high stability and nontoxic property. The results showed that the volume ratio of 1-pentanol (oil) to water (O/W) and the molar ratio of hexadecyltrimethylammonium bromide (CTAB) to tetraethylorthosilicate (TEOS) had effected on morphology and adsorption properties of DFNS in the water-CTAB-1-pentanol-ethanol-trimethylbenzene (TMB) microemulsion system. DFNS with bicontinuous concentric lamellar morphologies can be synthesized in this microemulsion at the meager O/W volume ratio (0.025–0.045). It features a tight mesoporous structure with a thin dendritic fibrous in 0.03 to 0.04 O/W volume ratio. The particle sizes, surface areas, and porosity of DFNS were positively correlated with the addition of the silica precursor TEOS. The size of DFNS increased from 123 to about 220 nm with the CTAB/TEOS molar ratio decreasing from 0.119 to 0.050. When the molar ratio of CTAB to TEOS = 0.119, DFNS has a smaller particle size (123 nm) with a larger surface area and abundant honeycomb mesopores; the low O/W volume ratio strategy provides theoretical support for the industrialization development of DFNS and nano-pesticides, which plays a profound role in promoting the sustainable development of pesticide reduction, efficiency and green agriculture.
研究领域:
材料科学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 9
·2813-2823
·
IF 2.936
Yang Jian,Li Xuemei,Zhang Jia,Tian Junying,Yao Xiaolan,Liu Hailong,Xia Chungu,Huang Zhiwei
Valuable 5-amino-1-pentanol (5-AP) was efficiently synthesized from biomass-derived dihydropyran over hydroxylapatite nanorod supported Ni catalysts (Ni-HAP), by coupling the in situ generation of 5-hydroxypentanal (5-HP, via the ring-opening tautomerization of 2-hydroxytetrahydropyran (2-HTHP)) and its subsequent reductive amination. The Ni-HAP catalyst with 10 wt% Ni loading exhibited the highest 5-AP yield than the other Ni-HAP catalysts with different Ni loadings and several commercial hydrogenation catalysts, including Ru/C, Pt/C and Pd/C, as well as Raney Ni. High Ni particles dispersion, high reducibility and acidic intensity were found to account for the superior catalytic performance of 10Ni-HAP. The effect of reaction parameters on the catalytic performance was investigated, and an excellent 5-AP yield of 92% was achieved under mild reaction conditions of 80 °C and 2 MPa H 2 . The stability of the Ni-HAP catalyst was studied using a continuous flow reactor, and the sintering of Ni nanoparticles was considered as the major reason for the decline in hydrogenation activity. Graphical Abstract The Ni-HAP catalyst exhibited high catalytic performance to synthesis 5-AP due to the high Ni particles dispersion, reducibility and acidic intensity.
研究领域:
催化化学
·
可再生化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2020
·
IF 2.888
Xingchuan Yang,Huanxin Li,Chunmei Cao,Li Xu,Guoji Liu
Liquid-liquid equilibria (LLE) data for ternary systems of water + 1,6-hexanediol + 1-pentanol/ 3-methyl-1-butanol/ 2-methyl-2-butanol were measured at (293.15, 303.15, 313.15 and 323.15) K under 101.3 kPa. Cloud-point method was applied to determine the solubility curves data. Distribution coefficient and separation factors for 1,6-hexanediol were calculated from the measured tie-line data to evaluate the extraction effect of alcohols on 1,6-hexanediol. The reliability of experimental LLE data were tested by Othmer–Tobias equation and Hand equation, NRTL and UNIQUAC models were applied to correlate the measured data and the calculated results show that both models can fit the experimental data very well.
研究领域:
化学工程
·
热力学
✓ 已验证
DOI
高影响因子
Green Synthesis and Catalysis
·
2023
·
IF 0
Jia Zhang,Jian Yang,Xuemei Li,Bin Mu,Hailong Liu,Chungu Xia,Aiqin Wang,Zhiwei Huang
The efficient synthesis of useful primary amines via reductive amination of biomass-based aldehydes and ketones over earth-abundant base metal catalysts is an attractive biomass value-adding technology yet facing lots of challenges. Herein, natural attapulgite (ATP) was applied as support for the fabrication of active Ni catalysts with different Ni loadings (5–30 wt%) by the deposition-precipitation method. The Ni/ATP-550 catalyst with 10–15 wt% Ni loadings was found to present the highest catalytic performance for the synthesis of valuable 5-amino-1-pentanol (5-AP) via reductive amination of biofurfural-derived 2-hydroxytetrahydropyran among a variety of commonly used oxide supports loaded Ni catalysts, as well as ATP supported nickel catalysts with other loadings, achieving 5-AP yield up to 94%. The intrinsic activity of the Ni/ATP catalysts was found to depend strongly on the Ni 0 crystallite size and Ni 0 fraction of the catalysts, which generally increased with increasing Ni 0 crystallite size and fraction, owing probably to the hydrogenation of imine intermediate is a structure-sensitive reaction. The efficient 10Ni/ATP-550 catalyst also exhibited good activity and stability in the reductive amination of several other biomass-derived aldehydes and ketones to their corresponding primary amines with good to excellent yields (81%–99%). This work provided a clean and efficient natural ATP-supported non-noble metal nickel-based catalytic system for the reductive amination of aldehydes and ketones to synthesize high-value-added primary amines, which could be a promising candidate for the industrial production of amines.
研究领域:
催化化学
·
生物质转化
·
绿色化学
✓ 已验证
DOI
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 9
·4236-4245
·
IF 3.591
Jia Zhang,Jian Yang,Junying Tian,Hailong Liu,Xuemei Li,Weiguo Fang,Xun Hu,Chungu Xia,Jing Chen,Zhiwei Huang
The synthesis of useful amines from bio-based carbonyl compounds is highly desired owing to their mild reaction conditions and green sustainability. The reductive amination of bio-furfural-derived 2-hydroxytetrahydropyran (2-HTHP) to high-value-added 5-Amino-1-pentanol (5-AP) was carried out over efficient Ni–Al2O3 catalysts prepared by a co-precipitation method. Among the Ni–Al2O3 catalysts with different Ni loadings (0–100 wt%) tested, the 50Ni–Al2O3 catalyst exhibited the highest 5-AP yield of 91.3% under mild conditions of 60 °C and 2 MPa H2. This catalyst also presented good stability during a 150 h time-on-stream without appreciable deactivation. Characterization results showed that the 50Ni–Al2O3 catalyst exhibited small Ni0 nanoparticles (5.5 nm), a high reduction degree (up to 95%), and a large amount of strong Lewis acid sites. The cooperative catalysis of the strong Lewis acid sites and highly dispersed metallic Ni sites is suggested to play an important role in achieving high efficiency in 2-HTHP reductive amination.
研究领域:
催化化学
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2018
·
IF 4.513
Huanxin Li,Xiaoqiang Gao,Yonghui Dou,Li Xu,Guoji Liu
The ternary systems of {(1-butanol or 1-pentanol) + (−)-trans-Cyclohexane-1,2-diamine + water} at (298.2–318.2) K under 100.02 kPa in terms of liquid-liquid equilibrium were investigated. The solubility data of each system were obtained by using cloud point method. For evaluation of extraction ability of the solvents used in this work, the distribution coefficients and separation factors were calculated and 1-pentanol was demonstrated to be very suitable. Besides, Othmer-Tobias and Hand correlation equations were applied to check the consistency of the tie-line data. Furthermore, NRTL and UNIQUAC models were used to correlate the experimental data with all the RMSD values less than 2.57%.
研究领域:
化学工程
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
Green Chemical Engineering
·
2023
·
IF 0
Jian Yang,Jia Zhang,Enrico Benassi,Xuemei Li,Hailong Liu,Weiguo Fang,Junying Tian,Chungu Xia,Zhiwei Huang
Al 2 O 3 -supported monometallic Ni, Co, and bimetallic Ni–Co nanocatalysts originated from layered double hydroxide precursors were synthesized by co-precipitation method, and used for the synthesis of useful 5-amino-1-pentanol (5-AP) and 1,5-pentanediol (1,5-PD) by reductive amination (RA) or direct hydrogenation of biofurfural-derived 2-hydroxytetrahydropyran (2-HTHP), respectively. In both reactions, the yield of the target products decreased monotonously with the increasing amounts of Co in the NiCo/Al 2 O 3 catalysts, owing probably to the replacement of highly reactive Ni by Co component with inferior hydrogenation activity at the low reaction temperature of 60 °C. However, the incorporation of Co could improve the reducibility of the NiCo/Al 2 O 3 bimetallic catalysts and promote the reaction stability of the catalysts, especially for Ni 2 Co 1 /Al 2 O 3 , in both reactions with over 180 h time-on-stream. Characterization of the catalysts before and after the reaction showed that the incorporating Co could inhibit the sintering of metal particles and hinder the surface oxidation of the more reactive Ni 0 species, thanks to the formation of Ni–Co alloy in the bimetallic catalysts. DFT-based modeling of the reaction mechanisms is also performed, supporting the reaction pathway proposed previously and also the much higher activity of Ni in the RA of 2-HTHP as compared with Co.
研究领域:
化学工程
·
催化材料科学
✓ 已验证
DOI
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Xuemei Li,Junying Tian,Hailong Liu,Xun Hu,Jia Zhang,Chungu Xia,Jing Chen,Haichao Liu,Zhiwei Huang
The reductive amination (RA) of 2-hydroxytetrahydropyran (2-HTHP) produced from biofurfural-derived dihydropyran provides a new efficient process for the clean synthesis of valuable 5-amino-1-pentanol (5-AP). Among various solid catalysts tested, the inexpensive Ni–Mg3AlOx catalysts derived from hydrotalcite precursors were found to be very active and selective, especially at Ni loadings above 20 wt %. A 85% total yield of 5-AP was obtained from dihydropyran on 40Ni–Mg3AlOx, the catalyst with the highest 2-HTHP RA activity among the Ni–Mg3AlOx catalysts, under mild conditions of 60 °C and 2 MPa H2. Characterization results showed that the reducibility of the calcined NiO-Mg3AlOx samples increased with increasing Ni loading from 5 to 50 wt %, while the Ni0 crystallite sizes exhibited a minimum of 4.8 nm on 40Ni–Mg3AlOx after reduction in H2 at 750 °C. The volcanic changes of 5-AP generation rate/yield with increasing Ni loading of the Ni–Mg3AlOx catalysts and with rising prereduction temperature of 30Ni–Mg3AlOx catalyst in 2-HTHP RA indicate that the balance of the reducibility and Ni0 particle size of the catalysts played an important role in obtaining high 5-AP yields. The 30Ni–Mg3AlOx catalyst showed a good stability in 2-HTHP RA examined in a continuous flow reactor over a 90 h time-on stream.
研究领域:
化学工程
·
催化
·
绿色化学
·
生物化工
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2023
·
IF 4.6
Shuxing Zhang,Jiali Zheng,Zhihui Li,Xiaoshu Ding,Yanji Wang
Herein, we reported a green catalytic reaction system for the synthesis of 5-amino-1-pentanol with furfural and ionic liquid hydroxylamine salt as the initial raw material. In addition, the method can obtain 2-furonitrile and furfurylamine in high yields. The reaction system comprises three new reactions, including the reaction of furfural with ionic liquid hydroxylamine salt to synthesize 2-furonitrile, the hydrogenation of 2-furonitrile to prepare furfurylamine, and the hydrogenolysis of furfurylamine to prepare 5-amino-1-pentanol. For the synthesis of 2-furonitrile, ionic liquid hydroxylamine salt (NH 2 OH) 2 ·[HSO 3 - b - mim ]·HSO 4 was prepared. The ionic liquid as co-solvents, catalysts, and hydroxylamine stabilizer has recovery and reusability. For the hydrogenation of 2-furonitrile to furfurylamine, high-efficiency Ru/g-C 3 N 4 catalyst was prepared. For the hydrogenolysis of furfurylamine to 5-amino-1-pentanol, high-efficiency Pt/ZrO 2 catalyst was prepared. Finally, the yield of 5-amino-1-pentanol based on furfural was 48.7%. A potential pathway for preparing drugs from biomass has been identified in this work.
研究领域:
化学工程
·
催化
·
绿色化学
·
有机合成
·
生物质转化
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）