Assessment of CO2 emissions for a bulk carrier fleet

A mixed catalyst prepared by mechanically milling VW/TiO2 and low content of Pt/Al2O3 for SCO of high-concentration NH3

“…2 The International Maritime Organization (IMO) has set an ambitious goal of reducing CO 2 emissions by at least 50% by 2050 compared to the baseline in 2008. 3 This means that low-carbon vessels need to be extensively deployed by around 2030, and their average CO 2 emission intensity should decrease by 70% compared to existing oil-fuel vessels. 4 This goal is extremely difficult to achieve as long as fossil oil is used as a marine fuel.…”

Carbon emissions statistical analysis for container shipping in the Black Sea

“…An analysis of four efficiency indicators for five bulk carriers was performed 24 to assess the possible reasons for the changes in 2017 and 2018. Among the five ships, there are two pairs of sister ships, and the deadweight of the ships is 55,000, 76,000 and 208,000 tonnes.…”

Influence of deposition order of dual active components on the NH3-SCO performance of the bimetallic Pt–V system supported on TiO2

“…) that stretching vibration modes for N-H of coordinated NH 3 species (3393 cm À1 ), NH3 species bonded to Lewis acid sites (3332, 3255, 3144, 1381 cm À1 ), bidentate nitrate species (1590 cm À1 ), NH 4 + species bonded to Brønsted acid sites (1649, 1433 cm À1 ) and -NH 2 species (1542 cm À1 ) accumulated on the surface of the V 0.5 /Pt 0.04 /TiO 2 catalyst after the introduction of NH 3 . As shown in Fig.…”

“…Currently, it is recognized as a promising approach to abate carbon dioxide (CO 2 ) emissions from the shipping industry by applying green ammonia (NH 3 ) fuel, which is produced via renewable energy. [1][2][3][4] But it has been reported that a highconcentration of NH 3 (2000-10 000 ppm) may exist in exhaust gas emitted from NH 3 -fuel engines owing to the relatively low flammability of NH 3 fuel and the ineradicable existence of some dead zones in combustion chambers. [4][5][6][7][8][9] Undoubtedly, this NH 3 slip will impose an enormous risk to human health and the environment.…”