Department of Energy, Engineering, Mechanics and Control Processes
governmentMoscow, Russia
Research output, citation impact, and the most-cited recent papers from Department of Energy, Engineering, Mechanics and Control Processes (Russia). Aggregated across the NobleBlocks index of 300M+ scholarly works.
Top-cited papers from Department of Energy, Engineering, Mechanics and Control Processes
We report a design of high voltage magnesium-lithium (Mg-Li) hybrid batteries through rational control of the electrolyte chemistry, electrode materials and cell architecture. Prototype devices with a structure of Mg-Li/LiFePO4 (LFP) and Mg-Li/LiMn2O4 (LMO) have been investigated. A Mg-Li/LFP cell using a dual-salt electrolyte 0.2 M [Mg2Cl2(DME)4][AlCl4]2 and 1.0 M LiTFSI exhibits voltages higher than 2.5 V (vs. Mg) and a high specific energy density of 246 W h kg(-1) under conditions that are amenable for practical applications. The successful demonstrations reported here could be a significant step forward for practical hybrid batteries.
The transformation of captured CO<sub>2</sub> into value-added chemicals to mitigate increasing CO<sub>2</sub> concentration in the atmosphere has gained significant attention recently.
A low-temperature CH<sub>3</sub>OH synthesis was achieved at 120–170 °C using tertiary amine and alcohol in the presence of a Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> catalyst by CO<sub>2</sub> hydrogenation.
), is shown to facilitate the formation of a key reaction intermediate, cyclic carbonates. Upon hydrogenation of cyclic carbonates in the presence of a homogenous Ru-PNP catalyst, a 1 : 1 mixture of methanol and glycol is produced. This approach has been demonstrated in one pot by adding all the required reactants directly or stepwise. The stepwise addition of reactants resulted in good yields (>95% for PG and 84% for methanol) and selectivity of products.
A reduced model connecting molecular structure to viscosity for single-component carbon capture solvents is presented.
capture processes. We anticipate that these phenomena are not specific to this system, but are present in other classes of colvents as well. We discuss how molecular-level interactions can have vast implications for solvent-based carbon-capture technologies, concluding that fortunately in this case, glassification of water-lean solvents can be avoided as long as the solvent is run above its glass transition temperature.
The recent interest in the production of green hydrogen through water electrolysis is hampered by its high cost when compared to steam methane reforming. To overcome this disadvantage, some studies explore replacing oxygen production with hydrogen peroxide at the anode, which has a higher value. Existing electrocatalysis research primarily focuses on hydrogen peroxide synthesis, neglecting process design and separation. Additionally, hydrogen peroxide's thermodynamic instability in alkaline conditions and the existence of other ions make the separation difficult. This paper proposes a novel concept for the paired water electrolysis process that can be used to improve green hydrogen production economics through valuable chemical coproductions. Valorizing hydrogen peroxide to sodium percarbonate as the final product was chosen to address hydrogen peroxide separation challenges. An electrolyzer stack of 2 MW was chosen, incorporating a recirculating structure, and a boron-doped diamond anode to enhance the hydrogen peroxide production as the base case. According to the techno-economic analysis, for a 2 MW electrolyzer stack, capital expenditure was calculated as 64.5 M€, operational expenses as 21.6 M€, and revenue was calculated as 2.5 M€, resulting in a negative cash flow of -19.1 M€. Results revealed that the process can be profitable (breakeven point) at a capacity of approximately 308 electrolyzer stacks, which is 616 MW in capacity. A sensitivity analysis was conducted to determine how cost drivers including electricity price, anode price, Faradaic efficiency, price of the products and tax subsidy affect the breakeven point. A breakeven point of 60 electrolyzer stacks (120 MW) was found with a 100% increase in the sodium percarbonate sale price. In comparison, a theoretical 100% Faradaic efficiency in the anode material would result in a breakeven point of 38 electrolyzer stacks (76 MW). Even a more realistic 75% Faradaic efficiency leads to a breakeven plant size of 75 stacks (150 MW). Further, multiple two-parameter sensitivity analyses were conducted to assess the relations between Faradaic efficiency, sodium percarbonate sale price and anode material price. For instance, if sodium percarbonate price increases by 100% and Faradaic efficiency increases to 75%, the breakeven capacity drops down to 13 stacks (26 MW). Despite facing economic challenges for the proposed process design based on available technologies, the techno-economic analysis highlights key targets for future works. It also provides valuable insights into the economic feasibility of simultaneously producing hydrogen and sodium percarbonate through water electrolysis, indicating promising potential for the future.
dispersion within the sorbent for maintaining good cyclic stability.
Driven by the LNG feed gas volume demand, recent large CSG field development in Queensland has been developed around large centralised compressor stations, designed and constructed on conventional gas project guidelines. Experience in the United States and Canada during more than four decades, however, has shown the best CSG reservoir performances and lifecycle costs are achieved with low capital cost, flexible infrastructure, and infield compression close to well heads. The Networked InField Compression System offers CSG producers significant advantages compared with centralised systems. The model comprises a grid network of well heads; low, intermediate, and high pressure pipelines; integral infield compressors, and booster compression stations. The model differs from traditional models in a number of ways. The majority of wellhead infrastructure and compression is relocated back in the field, reducing costs and inspection requirements. Low horsepower integral infield compressors are gas driven, pipeline losses are reduced and use 30–40% less BHP than screw compressors, and skid-mounted for simple and cost-effective relocation. Coiled high pressure, low diameter flexible piping is used, which requires a narrow right of way, few connections, and can be ploughed in multiple lines from up to 5–8 km per day, depending on soil conditions.In addition to 30–40% improvements in capital expenditure and installation time, the Networked InField Compression model offers 20–30% lower operating costs and 10–20% more gas from increased flow levels and/or extended well life. Further, environmental impact is decreased by 20–40%, as land use, CO2 emissions; crew sizes and peak water flow are significantly reduced compared with centralised systems.
Благодаря бурному развитию масс-спектрометрии высокопроизводительный протеомный анализ стал неотъемлемой частью биомедицинских исследований. Однако, наряду с совершенствованием инструментальных методов протеомного анализа, возрастает роль контроля качества получаемых экспериментальных данных. Актуальность этой проблемы была давно осознана научным сообществом, и в последние годы было разработано множество комплексных алгоритмов контроля эффективности всех стадий получения данных. В основе большинства предложенных алгоритмов лежит использование больших наборов параметрических метрик, интерпретация которых требует значительного опыта и глубоких знаний. Более того, многие из них используют информацию об идентифицированных спектрах, что увеличивает время анализа, а также вносит дополнительную неопределенность связанную с параметрами поисковых алгоритмов. В работе предложен набор простых и наглядных метрик качества протеомного анализа, основанные на измеряемых характеристиках масс-спектров первого и второго уровня. Также, разработана утилита открытого кода viQC (hg.theorchromo.ru/viQC), реализующая предложенный подход. На примере экспериментальных данных с трёх различных масс-спектрометров с орбитальной ионной ловушкой продемонстрирована работа предложенного подхода и утилиты viQC для повышения качества и глубины панорамных протеомных анализов. Mass spectrometry-based bottom-up proteomics becomes a method of choice in a broad range of biomedical studies. However, because of the growing complexity of the mass spectrometers employed in these studies, there is an increasing need for robust and rapid quality control over the instrument performance. A variety of quality control tools targeting all aspects of LC-MS instrument operation have been developed recently. These tools are typically loaded heavily with a large number of metrics. Many of these metrics are difficult for interpretation for the regular users without extensive instrumentation and/or data processing experience. In this work, we introduced a new open-source utility viQC freely available at hg.theorchromo.ru/viQC. It implements a number of fast, visually represented, and intuitively understandable metrics including the recently demonstrated semi-supervised method for assessment of the proteomic data quality. The developed tool has been tested experimentally using data from three different Orbitrap instruments and demonstrated its capability for assessing the possible flaws in the instrument’s operation and subsequent improving the efficiency of proteomic analysis.