INDUSTRIAL CROPS AND PRODUCTS
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2025
·
IF 6.2
Zifan Wu,Lu Chen,Yacong Deng,Yuting Qiu,Bin Liu,Yichuan Li,Yuan Pan,Bin Dong,Yongming Chai
During the chemical pulping of lignocellulose, a lot of papermaking black liquor (pH 13–14) was generated, containing a substantial amount of low molecular weight lignin, which has potential for the production of aviation fuels. Herein, black liquor was converted into aviation fuel-range arenes via a two-step process including direct solvolysis in strong alkali followed by catalytic hydrodeoxygenation of the products. In the solvolysis step, the black liquor (20 % solids content, pH 14) could directly produce lignin oil (mainly consisting of alkylphenols and oligomers linked by β-O-4 and β-5 linkages) with a high yield (67.3 wt%) at 280 °C under hydrogen atmosphere in a methanol/ n -hexane (2:1, v/v) mixed solvent, which was much higher than that of the other lignin feedstocks. In the second step, the obtained lignin oil from the black liquor was efficiently hydrodeoxygenated into arenes (80.1 % selectivity) over a CoMoS/γ-Al 2 O 3 catalyst at 320 °C under 2 MPa H 2 , achieving a deoxygenation degree of 97.7 %, and CoMoS/γ-Al 2 O 3 efficiently promoted the cleavage of C ar -O bonds in lignin-derived phenols. Techno-economic analysis and life cycle assessment further emphasized the actual feasibility of the two-step process. This work presents a novel strategy for converting papermaking black liquor into aviation fuels.
研究领域:
化学制浆
·
木质素转化
·
燃料生产
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催化加工
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绿色化学
·
生物炼制
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2016
·
IF 8.328
Tengfei Yang,Ying Huo,Yang Liu,Zebao Rui,Hongbing Ji
Rational design of efficient noble metal catalysts and its application process by the interface promoted strategy is an emerging research field. Herein, highly efficient nickel hydroxide promoted PtNi(OH)x/γ-Al 2 O 3 catalysts for room temperature HCHO oxidation was developed. PtNi(OH)x/γ-Al 2 O 3 demonstrates remarkably better performance than the state of the art non-reductive oxide supported Pt catalysts, and ranges among the best performance of the reductive metal oxide supported Pt catalysts. A (>)99% HCHO conversion and a (>)100 h stable performance at 30 °C were obtained over PtNi(OH)x/γ-Al 2 O 3 with a 0.3 wt% Pt loading amount. Various characterizations, including in situ DRIFTS study, were performed to understand the reason for the enhanced performance of PtNi(OH)x/γ-Al 2 O 3 . The superior performance is attributed to the formation of enormous Pt/Ni(OH)x interface, and the preferred hydroxyl facilitated HCHO oxidation pathway through formate oxidation by the abundant associated hydroxyl groups nearby the Pt active sites. Such hydroxyl groups confined interface promotion strategy may bring new insight into the designing of highly efficient bimetallic catalysts and its potential technological applications for HCHO removal.
研究领域:
催化化学
·
环境科学
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DOI
高影响因子
OZONE-SCIENCE & ENGINEERING
·
2023
·
IF 2.7
Tingfeng Xue,Jing Zhang,Jingcheng Wei,Bingyan Zhu,Jianwei Song,Shuang Xu,Liwei Pan
In this study, a novel NiAl2O4/NiO@γ-Al2O3 catalyst was prepared by the impregnation-calcination method and used for the catalytic ozonation of tartrazine wastewater. The NiAl2O4/NiO@γ-Al2O3 catalyst were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption-desorption experiments. It was found that NiAl2O4/NiO@γ-Al2O3 significantly improved the removal of chemical oxygen demand of the dye wastewater from 40% for the direct ozone oxidation to 65%, and the ozone concentration depletion for catalytic ozonation was 120% of that for ozone alone. The catalytic activity of the catalyst did not significantly decrease after reuse for six cycles and leaching concentration of metal ions less than 1%. However, the toxicity of the dye wastewater was greatly reduced after the catalytic ozonation. The pyridine Fourier transform infrared spectroscopy showed the catalytic ozonation reaction was related with Lewis acid sites. The presence of hydroxyl radicals, superoxide anion radicals, and singlet oxygen was verified by an electron paramagnetic resonance, and the quenching experiments confirmed that the removal of organic pollutants from the tartrazine wastewater mainly relied on hydroxyl radicals and singlet oxygen. Therefore, the NiAl2O4/NiO@γ-Al2O3 could be an effective catalyst for the rapid catalytic ozonation of dye wastewater.
研究领域:
环境工程
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催化化学
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水处理
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高级氧化技术
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材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2015
·
IF 4.321
Yi-Si Feng,Cui Liu,Yu-Mei Kang,Xue-Mei Zhou,Liang-Liang Liu,Jin Deng,Hua-Jian Xu,Yao Fu
Biomass glycerol is an important raw material for many available chemicals, such as 1,2-propanediol (1,2-PDO). Hydrogenolysis of glycerol to 1,2-PDO is considered as a sustainable process with renewable potential application. In this paper, a series of bimetallic PdCu-KF/γ-Al 2 O 3 were prepared and the structures of catalysts were characterized by XRD, XPS, TEM and CO 2 -TPD. By measuring the activity of the catalyst, we found that PdCu-KF/γ-Al 2 O 3 (Pd:Cu:KF = 0.05:1:0.5) can be used as an efficient catalyst for hydrogenolysis of glycerol to 1,2-PDO, with 98.3% selectivity and nearly 100% conversion (200 °C, 2.5 MPa initial H 2 pressure, 20 h).
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DOI
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2026
·
IF 6.7
Zewei Liu,Fuhang Huo,Liping Zhang,Yong Liu,Xianglong Li,Lei Zhang,Huarui Zhang,Zixian Pang,Linhua Jiang,Bin Li
A composite material synthesized from HCl-treated red mud and γ-Al 2 O 3 (Al 1 HRM 2 ), was developed to enhance CF 4 decomposition in our previous study. However, its catalytic performance requires improvement, as it suffers from poor stability. In this study, the low-cost and anti-HF-corrosive CaO was utilized to further boost the material's CF 4 decomposition efficiency and stability. Specifically, decomposition efficiency and stability increased by 30% and 2.25 times than that of Al 1 HRM 2 , respectively. At the microscopic level, it was observed that after CaO uniformly distributed across the catalyst surface, it enhanced the Al-O (Al-O-Al) stretching vibration, increased the number of oxygen vacancies, and simultaneously prevented the phase transition from γ to α. Additionally, CaO intensifies the characteristic peaks of strong L-acid sites, enhancing their CF 4 adsorption capacity and strength. Specifically, Al Ⅲ sites facilitate C-F bond cleavage to form AlF 3 , which undergoes fluorine-oxygen exchange with CaO to produce CaF 2 . This process effectively inhibits F + occupation of γ-Al 2 O 3 active sites, thereby promoting CF 4 decomposition. This study utilizes RM as a high-performance material for CF 4 pollution control, achieving the goal of treating waste with waste across the aluminum industry supply chain. It provides a new technological foundation for purifying difficult-to-treat Perfluorocarbons greenhouse gases.
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DOI
高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Yi Lu,Fengjian Zhu,Chenglong Li,Zhiying Du,Liwei Niu,Hong Chi,Qiang Chang,Dan Xu,Xingwu Liu,Zunqi Liu,Jianbin Chen
Constructing thermally durable single-atom catalysts resembling mononuclear homogeneous catalysts for the hydrosilylation industry is usually challenging. Herein, a stable single-atom catalyst with Pt single atoms anchored on a nonreducible and industrially fundamental γ-Al2O3 support (Pt1/γ-Al2O3) was fabricated using atomic layer deposition technology. The catalyst enabled anti-Markovnikov hydrosilylation under room-temperature and solvent-free conditions and exhibited activity exceeding that of the homogeneous Karstedt’s catalyst. The Pt1/γ-Al2O3 catalyst not only afforded a broad substrate scope in high yields, encompassing various alkenes and alkynes, but also exhibited robust stability and recyclability. Extended X-ray absorption fine structure and X-ray absorption near-edge structure analyses confirmed that the Pt atoms were stabilized by bonding with oxo ligands, forming a PtO4 moiety embedded in γ-Al2O3 lattices with coordination geometries resembling those of mononuclear homogeneous catalysts. Density functional theory calculations revealed that the unexpected catalytic performance could be attributed to the partially positively charged and atomically dispersed Pt atoms in the Pt1/γ-Al2O3 catalyst, which arose from metal–support interaction through oxo ligands, resulting in an elevated d-orbital energy and an upshift in the d-band center away from the Fermi level. This electronic effect facilitated the easier dissociation of phenylethyl and promoted its coupling with the dimethylphenylsilyl group on the catalyst surface, ultimately leading to the desired product.
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
·
IF 3.9
Shan Li,Huixia Li,Taotao Huang,Xuebo Chen
The development of efficient Cu–Ce catalysts for selective CO oxidation in hydrogen streams (CO-PROX) remains a critical challenge for hydrogen purification technologies. Herein, we report an acid-modified Cu–Ce/γ-Al2O3 catalyst synthesized through HCl-assisted wet impregnation and thermal aging, demonstrating exceptional low-temperature CO-PROX performance. The optimized CuCe0.8(Cl)0.2/γ-Al2O3 catalyst achieves superior CO conversion below 160 °C and maintains stable activity for 50 h at 160 °C. Mechanistic studies reveal that HCl modification induces dual enhancement effects: (1) increased Cu+ species density enhances CO adsorption capacity; (2) elevated Ce3+ concentration promotes oxygen vacancy formation for efficient O2 activation. Complementary characterization demonstrates that the acid treatment optimizes the active species dispersion and creates hierarchical pore structures in the γ-Al2O3 support, which facilitates reactant accessibility and stabilizes catalytic intermediates. The reaction mechanism involves synergistic cooperation between Cu+-mediated CO adsorption, oxygen vacancy-assisted O2 activation, and hydroxyl-assisted bicarbonate intermediate formation on the alumina support. This work establishes an effective acid-modification strategy for designing durable CO-PROX catalysts, advancing the development of a practical hydrogen purification system.
研究领域:
催化化学
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材料科学
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环境科学
·
能源技术
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产品关联
DOI
高影响因子
JOURNAL OF ADVANCED OXIDATION TECHNOLOGIES
·
2016
·Vol. 19
·期 2
·358-365
·
IF 0.738
Yanfang Liu,Guixia Li,Zhili Zhang,Xiang Gao,Jianrui Niu,Junna Zhao,Zaixing Li
γ-Al 2 O 3 supported Manganese and Ferric oxide (Mn-Fe/Al 2 O 3 ) were synthesized and used as catalyst for ozonation of bisphenol A (BPA) in aqueous solution. It was conducted in a semi-batch reactor under different operational conditions, i.e., varying initial pH, ozone flow rate, initial BPA concentration and catalyst dosage. The results indicated that the presence of Mn-Fe/Al 2 O 3 lead to a great enhancement in ozonation of BPA. Using 5 g/L Mn-Fe/Al 2 O 3 evaluated BPA (50 mg/L) removal efficiency up to 84.1% under particular reaction conditions, while that of the single ozonation process was 48.5%. The influence of tert-butanol demonstrated that initiation of hydroxyl radicals was involved and plays an important role in catalytic ozonation. The decrement of solution pH in catalytic ozonation was much higher than that in ozone alone, indicating much small molecule acids produced in catalytic ozonation process. The repeated use the Mn-Fe/Al 2 O 3 proved that it had a good reusability and stability.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2024
·Vol. 89
·期 3
·562-575
·
IF 2.5
Fang Chengyi,Xie Shiwei,Xiao Tian,Liu Zhi,Hong Hui,Gong Shuyi,Liu Xixiang
View large Download slide View large Download slide Close modal The three-dimensional electrocatalytic oxidation (3DEO) is a promising electrochemical system in the treatment of refractory wastewater, but still far from large-scale applications. In this work, we prepared 146.5 Kg Ti-Sn-Sb@ γ -Al 2 O 3 particle electrodes to construct a 3DEO system for the pretreatment of hypersaline and high-organic wastewater in an industrial park sewage plant, with activated carbon particle electrodes as a comparison. The average COD removal rates of Ti-Sn-Sb@ γ -Al 2 O 3 and activated carbon-based 3DEO systems were 24.43 and 48.73%, respectively, and the energy consumption of the two 3DEO systems were 102.8 and 31.4 kWh/Kg COD, respectively. However, compared to the negligible enhancement of wastewater biodegradability in the activated carbon 3DEO system, the Ti-Sn-Sb@ γ -Al 2 O 3 3DEO system greatly improved the biochemical index (B/C) from 0.021 to 0.166 (by 690.5%). Due to its superior catalytic capacity, Ti-Sn-Sb@ γ -Al 2 O 3 outperforms activated carbon in improving biodegradability as the latter relies mainly on adsorption. The results of this work provide a 3DEO engineering practice experience on the pretreatment of hypersaline and high-organic wastewater. A three-dimensional electrocatalytic oxidation (3DEO) system was established to pretreat hypersaline and high-organic wastewater. Ti-Sn-Sb@ γ -Al 2 O 3 3DEO shows good ability to improve biodegradability. Activated carbon 3DEO system shows higher but gradually decreasing COD removal. Energy consumption is low in the pilot-scale pretreatment process. Ti-Sn-Sb@ γ -Al 2 O 3 electrodes retain major active species in long-term use.
研究领域:
环境工程
·
电化学工程
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产品关联
DOI
PubMed
高影响因子
OZONE-SCIENCE & ENGINEERING
·
2025
·
IF 1.4
Zhibo Liu,Jing Zhang,Jingcheng Wei,Bingyan Zhu,Tingfeng Xue,Xiaofu Li,Liwei Pan
To address the challenges posed by highly toxic and recalcitrant compounds in phenol-containing wastewater, a novel CoAl2O4/γ-Al2O3 catalyst was synthesized via an impregnation-calcination method and applied for catalytic ozonation of phenolic wastewater. The catalyst was thoroughly characterized using X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) surface area analysis, Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and inductively coupled plasma (ICP) analysis. The catalyst’s abundant Lewis acid sites act as active centers, promoting the decomposition of ozone into reactive oxygen species. This study elucidates the pathways by which the CoAl2O4/γ-Al2O3 catalyst synergistically activates O3 to generate O2·−, ·OH, and 1O2, revealing that phenol mineralization primarily proceeds through ·OH and 1O2-mediated oxidation. Compared to ozonation alone, the CoAl2O4/γ-Al2O3 catalyst demonstrates superior O3 activation capability, significantly enhancing the phenol mineralization efficiency from 13.5% to 56.5% while improving ozone utilization (mgTOCremoved/mgO3consumed) from 0.02 to 0.08. Remarkably, the catalyst maintains excellent stability over multiple reaction cycles. Toxicity evaluation confirms substantial reduction in biotoxicity of the treated wastewater. These findings collectively demonstrate that CoAl2O4/γ-Al2O3-based catalytic ozonation represents an efficient and promising technology for phenolic wastewater treatment.
研究领域:
环境科学
·
催化化学
·
水处理技术
·
高级氧化工艺
·
材料化学
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产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2023
·
IF 3.7
Jun Luo,Ao Wang,Lichao Jia,Dong Yan,Mei Hu,Jian Li
For the improvement of commercial catalyst 13 wt % Cr-γ-Al2O3 for the dehydrogenation of light alkanes to olefins, 13 wt % Cr-x wt % Ce-γ-Al2O3 catalysts with x equaling 0, 2.5, 5, 7.5, and 10, named as 0Ce, 2.5Ce, 5Ce, 7.5Ce, and 10Ce, are prepared by the incipient wetness impregnation method, characterized by X-ray diffraction, transmission electron microscopy, Raman, UV–vis, X-ray photoelectron spectroscopies, and temperature-programmed reduction and evaluated for ethane dehydrogenation to ethylene. Their performance increases with Ce addition to 5 wt % and then decreases and attenuates with time. 5Ce demonstrates the highest dehydrogenation activity and better regeneration ability than 0Ce. It is found that the as-prepared 5Ce contains more active amorphous Cr6+ species and less crystalline Cr3+ species (α-Cr2O3) than 0Ce, other than the Ce species of CeO2. The reasons for the better dehydrogenation and regeneration performance of 5Ce are that the CeO2 particles in 5Ce physically separate the Cr species, promoting the formation of Cr6+ species, preventing their aggregation and migration to form less active α-Cr2O3 and inactive α-(Cr, Al)2O3, and preserving more active Cr6+ species in the as-prepared and regenerated catalysts.
研究领域:
催化化学
·
化学工程
·
材料科学
·
石油化工
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DOI
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Xiaolu Zhou,Ling Xia,Yufei Hu,Gongke Li
Preparation of γ-Al2O3/Eu-BTC for catalytic sensing toward terpenes. • A cyclic cataluminescence array sensor based on k-values corresponding to terpenes. • Investigation of the k -value pattern on the variation of terpene composition. • Origin identification of 86 hop samples based on characteristic terpenes. Hops are crucial to beer flavor, but their geographically dispersed origins are prone to confusion, while the significant variation in terpene ratios among hops from different regions provides key support for its origin identification. In this study，γ-Al 2 O 3 /Eu-BTC composite was synthesized for cyclic cataluminescence array sensor to terpenes. The results showed that the corresponding reaction decay coefficients ( k -values) for myrcene, farnesene, and humulene were 24.3, 32.0, and 73.8, respectively, enabling terpene-specific fingerprinting. Binary and ternary terpene mixtures exhibited predictable k -value variations, with relative standard deviations below 9.6%. A rapid detection method for hops identification was developed and successfully applied to 86 samples from six different origins. The method demonstrated both feasibility and accuracy, highlighting its potential as a rapid, simple, and efficient technique for origin identification of hops and other aromatic plants. Download: Download high-res image (160KB) Download: Download full-size image
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高影响因子
危险品化学品经营许可证（带存储）