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Wang Y, Zhu G, Wang M, Wu J, Fu D, Xie Q, Shi Q, Xu C, Han Y. Discovery of novel cage compounds of diamondoids using multi-dimensional mass spectrometry. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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Bacterial Biological Factories Intended for the Desulfurization of Petroleum Products in Refineries. FERMENTATION-BASEL 2023. [DOI: 10.3390/fermentation9030211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
The removal of sulfur by deep hydrodesulfurization is expensive and environmentally unfriendly. Additionally, sulfur is not separated completely from heterocyclic poly-aromatic compounds. In nature, several microorganisms (Rhodococcus erythropolis IGTS8, Gordonia sp., Bacillus sp., Mycobacterium sp., Paenibacillus sp. A11-2 etc.) have been reported to remove sulfur from petroleum fractions. All these microbes remove sulfur from recalcitrant organosulfur compounds via the 4S pathway, showing potential for some organosulfur compounds only. Activity up to 100 µM/g dry cell weights is needed to meet the current demand for desulfurization. The present review describes the desulfurization capability of various microorganisms acting on several kinds of sulfur sources. Genetic engineering approaches on Gordonia sp. and other species have revealed a variety of good substrate ranges of desulfurization, both for aliphatic and aromatic organosulfur compounds. Whole genome sequence analysis and 4S pathway inhibition by a pTeR group inhibitor have also been discussed. Now, emphasis is being placed on how to commercialize the microbes for industrial-level applications by incorporating biodesulfurization into hydrodesulfurization systems. Thus, this review summarizes the potentialities of microbes for desulfurization of petroleum. The information included in this review could be useful for researchers as well as the economical commercialization of bacteria in petroleum industries.
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Next Challenges for the Comprehensive Molecular Characterization of Complex Organic Mixtures in the Field of Sustainable Energy. Molecules 2022; 27:molecules27248889. [PMID: 36558021 PMCID: PMC9786309 DOI: 10.3390/molecules27248889] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
The conversion of lignocellulosic biomass by pyrolysis or hydrothermal liquefaction gives access to a wide variety of molecules that can be used as fuel or as building blocks in the chemical industry. For such purposes, it is necessary to obtain their detailed chemical composition to adapt the conversion process, including the upgrading steps. Petroleomics has emerged as an integral approach to cover a missing link in the investigation bio-oils and linked products. It relies on ultra-high-resolution mass spectrometry to attempt to unravel the contribution of many compounds in complex samples by a non-targeted approach. The most recent developments in petroleomics partially alter the discriminating nature of the non-targeted analyses. However, a peak referring to one chemical formula possibly hides a forest of isomeric compounds, which may present a large chemical diversity concerning the nature of the chemical functions. This identification of chemical functions is essential in the context of the upgrading of bio-oils. The latest developments dedicated to this analytical challenge will be reviewed and discussed, particularly by integrating ion source features and incorporating new steps in the analytical workflow. The representativeness of the data obtained by the petroleomic approach is still an important issue.
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Wang Y, Zhang X, Hu W, Dong C, Fu D, Habtegabir SG, Han Y. Ultra-fast screening of free fatty acids in human plasma using ion mobility mass spectrometry. J Sep Sci 2022; 45:1818-1826. [PMID: 35340115 DOI: 10.1002/jssc.202200037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/10/2022] [Accepted: 03/22/2022] [Indexed: 11/06/2022]
Abstract
Free fatty acids involved in many metabolic regulations in human body. In this work, an ultra-fast screening method was developed for the analysis of free fatty acids using trapped ion mobility spectrometry coupled with mass spectrometry. Thirty-three free fatty acids possessing different unsaturation degrees and different carbon chain lengths were baseline separated and characterized within milliseconds. Saturated, monounsaturated, and polyunsaturated free fatty acids showed different linearities between collision cross section values and m/z. Establishment of correlations between structures and collision cross section values provided additional qualitative information and made it possible to determine free fatty acids which were out of the standards pool but possessed the confirmed linearity. Gas-phase separation made the quantitative analysis reliable and repeatable at a much lower time cost than chromatographic methods. The sensitivity was comparable to and even better than the reported results. The method was validated and applied to profiling free fatty acids in human plasma. Saturated free fatty acids abundance in the fasting state was found to be lower than that in the postprandial state, while unsaturated species abundance was found higher. The method was fast and robust with minimum sample pretreatment, so it was promising in high-throughput screening of free fatty acids. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yinghao Wang
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Xianxie Zhang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, 100005, China.,Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Wenya Hu
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Chenglong Dong
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Dali Fu
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Sara Girmay Habtegabir
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Yehua Han
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
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Ion Mobility Mass Spectrometry for Structural Elucidation of Petroleum Compounds. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Li T, Zhang H, Li Y, Li J, Wang J, Xiao J. Theoretical Study on the Unimolecular Pyrolysis of Thiophene and Modeling. ACS OMEGA 2021; 6:20471-20482. [PMID: 34395994 PMCID: PMC8359137 DOI: 10.1021/acsomega.1c02155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
Thiophenic sulfur is the most stable and abundant organic sulfur species in petroleum. Removal of thiophenes has profound significance in environmental protection. In this work, we investigate the unimolecular pyrolysis of thiophene from a kinetic perspective. High-level ab initio methods have been employed to deduce the potential energy surface. Rate coefficients of the elementary reactions are computed using variational transition-state theory at the CCSD(T)/CBS level to develop a kinetic model. By comparison with preceding experimental results, the kinetic model shows good performance in calculating the thiophene pyrolysis rate. The Arrhenius expression for thiophene unimolecular pyrolysis has been redetermined as k = 1.21 × 1013 × exp[(78.96 kcal/mol)/(RT)]. The unimolecular pyrolysis of thiophene is mainly initiated by the ring-H migrations, whereas the C-S bond rupture has limited contribution to the overall pyrolysis rate. Thioketene (SC2H2) and ethyne (C2H2) are the major pyrolysis products at all temperatures. Significant amounts of the thioformyl (HCS) radical and CS could also be yielded. By contrast, atomic sulfur and H2S are difficult to be directly produced. Possible secondary reactions in the products have also been discussed.
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Affiliation(s)
- Tianshuang Li
- School
of Metallurgy and Environment, Central South
University, Hunan
Province, Changsha 410083, China
- National
Engineering Laboratory of High Efficient Recovery of Refractory Nonferrous
Metals, Central South University, Hunan Province, Changsha 410083, China
| | - Hongliang Zhang
- School
of Metallurgy and Environment, Central South
University, Hunan
Province, Changsha 410083, China
- National
Engineering Laboratory of High Efficient Recovery of Refractory Nonferrous
Metals, Central South University, Hunan Province, Changsha 410083, China
| | - Yun Li
- School
of Metallurgy and Environment, Central South
University, Hunan
Province, Changsha 410083, China
| | - Jie Li
- School
of Metallurgy and Environment, Central South
University, Hunan
Province, Changsha 410083, China
- National
Engineering Laboratory of High Efficient Recovery of Refractory Nonferrous
Metals, Central South University, Hunan Province, Changsha 410083, China
| | - Jingkun Wang
- China
Hongqiao Group Limited, Zouping 256200, China
| | - Jin Xiao
- School
of Metallurgy and Environment, Central South
University, Hunan
Province, Changsha 410083, China
- National
Engineering Laboratory of High Efficient Recovery of Refractory Nonferrous
Metals, Central South University, Hunan Province, Changsha 410083, China
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