Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Valdis Kampars"'
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 625-629 (2022)
The capture and utilization of carbon dioxide (CO2) has been attracting increasing interest. Producing methanol from captured CO2 and renewable hydrogen is one promising route for CO2 utilization because it would introduce recycled carbon to a vast g
Externí odkaz:
https://doaj.org/article/e8b8488a34404661aed16e3d4ca876a3
Autor:
Agija Stanke, Valdis Kampars
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 461-466 (2022)
The huge contribution of the transportation sector to GHG emissions motivates the search for a sustainable and renewable alternative to fossil fuels. Fischer–Tropsch synthesis (FTS) is a catalytic process to convert synthesis gas into hydrocarbons
Externí odkaz:
https://doaj.org/article/750828fdf89346719bcbaa373802367a
Publikováno v:
Catalysts, Vol 12, Iss 2, p 226 (2022)
To develop a method for the preparation of MgO nanoparticles, precatalyst synthesis from magnesium nitrate with ammonia and calcination was performed in presence of PEG in air. Without PEG, the catalysts are inactive. The conversion to hydroxide was
Externí odkaz:
https://doaj.org/article/66bb1407ed9f411492e6effefd6915bb
Publikováno v:
Chemical Engineering Transactions, Vol 80 (2020)
A pure interesterification reaction of triglyceride with methyl acetate in the presence of potassium tert-butoxide homogeneous catalyst produces a reaction mixture containing 72.5 wt.% of fatty acid methyl esters (FAME) and 14 wt.% of triacetin. In o
Externí odkaz:
https://doaj.org/article/3f13751d45c4416aa6e833c6dbd27527
Publikováno v:
Journal of Chemistry, Vol 2019 (2019)
Conventionally, the biodiesel (mixture of fatty acid methyl esters, FAME) production proceeds by transesterification of triglycerides with methanol accordingly by the formation of glycerol as a by-product, which cannot be included in biofuel composit
Externí odkaz:
https://doaj.org/article/1fdecc99e527477cbd739845307bd331
Publikováno v:
Nanomaterials, Vol 3, Iss 1, Pp 107-116 (2013)
Conductive polymer poly-3-hexylthiophene (P3HT) needles were self-assembled using a second component (indandione derivatives) as a linking agent to enhance their long range alignment. The morphologies of the hybrid organic/organic materials were char
Externí odkaz:
https://doaj.org/article/103fbe319ec945fabc1af00068cab160
Publikováno v:
BioResources, Vol 2, Iss 4, Pp 699-706 (2007)
The composition and properties of the products of fast pyrolysis of hardwood, obtained in a two-chamber (drying and pyrolytic) ablation type reactor in the temperature range 450-600ºС, were investigated. It has been found that, upon the additional
Externí odkaz:
https://doaj.org/article/002c1f82f4b74d5b82f7da5137014a83
Publikováno v:
Acta Crystallographica Section E, Vol 64, Iss 7, Pp o1200-o1200 (2008)
The title compound, C22H19NO2, has potential for use as a new nonlinear optical material. Molecules are almost planar. One C atom of the heterocyclic ring system is disordered over two positions; the site occupancy factors are 0.6 and 0.4.
Externí odkaz:
https://doaj.org/article/c4e4bb8263a940ff85715ba3886c0a73
Autor:
Valdis Kampars, Anastasija Naumova
Publikováno v:
Key Engineering Materials. 903:75-80
The blends of varying proportions of biodiesel (FAME) containing formate esters of glycerol and 93.0 wt.% fatty acid methyl esters, obtained in an interesterification reaction with methyl formate without further purification, and winter diesel fuel,
Autor:
Kristīne Lazdoviča, Valdis Kampars
Publikováno v:
Key Engineering Materials. 903:69-74
Pyrolysis of buckwheat straw with or without catalysts was investigated using the TGA-FTIR method to determine the influence of nickel and cobalt ferrites on the distribution of pyrolysis products. According to the obtained results, the overall shape