Curing early age concrete (hereinafter referred to as EAC) with CO2 a new method for capturing and storing can not only result in energy savings emission reductions, but also improve the performance of shorten curing time, which leads various application prospects. In this paper, we collect existing research results at home abroad explain reaction mechanisms CO2-cured EACC); summarize effects e...

We have conducted a detailed analysis of costs associated with today’s technology for CO2 separation and capture at three types of power plants: integrated coal gasification combined cycles (IGCC), pulverized coal-fired simple cycles (PC), and natural gas-fired combined cycles (NGCC). The analysis was based on studies from the literature that analyzed the economics of capturing CO2 emitted at p...

Two isostructural 1D compounds {[M3(hpdc)2(H2O)6] 2H2O}n (M = Mn, Co; H3hpde = 2-hydroxypyrimidine-4,6-dicarboxylic acid) were synthesized by the in situ hydrothermal reactions of 2-chloropyrimidine-4,6-dicarboxylic acid with MCl2 (M = Mn, Co) and NaOH; the MnII compound shows spin-canted antiferromagnetism, whereas the CoII compound exhibits the coexistence of spin-canting and a two-step field...

Fossil fuels constitute a major energy resource for Canada. In 2002 alone, the production of oil, gas and coal contributed over $30 billion to the Canadian economy. Fossil fuel is presently the world’s most abundant, economical and reliable fuel for energy production. However, the industry now faces a major challenge because the production of fossil fuels including coal, crude oil and gas, and ...

The capture of low concentration CO2 presents numerous challenges. Here, we report that zinc containing chabazite (CHA) zeolites can realize high capacity, fast adsorption kinetics, and desorption energy when capturing ca. 400 ppm CO2. Control the state location ions in CHA cage is critical to performance. Zn2+ loaded onto paired anionic sites six-membered rings (6MRs) are primary adsorb 0.51 m...

Lowering the regeneration temperature for solid CO2-capture materials is one of critical tasks economizing CO2-capturing processes. Based on reported pKa values and nucleophilicity, we compared two different polyethylenimines (PEIs): branched PEI (BPEI) linear (LPEI). LPEI outperformed BPEI in terms adsorption desorption properties. Because a below 73–75 °C, even high loading amount can effecti...

The option of capturing CO2 at large power stations and storing it in geological formations allows for the use of fossil energy resources without further destabilization of the climate system. From an economic point of view, the efficiency of Carbon Capturing and Sequestration (CCS) depends mainly on leakage rates, marginal costs of CCS (including the energy penalty) and the volume of available...