Degradation study of piperazine, its blends and structural analogs for CO2 capture: A review

Mazari, Shaukat Ali; Ali, Brahim Si; Jan, Badrul M.; Saeed, Idris Mohamed

doi:10.1016/j.ijggc.2014.10.003

Cited by 43 publications

(15 citation statements)

References 51 publications

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“…These conversion and degradation reactions will take place in both the gas phase and the atmospheric aqueous phase, which includes water-containing aerosol particles and cloud-, rain-and fog-droplets [38]. Significant evidences for formation of nitrosamines and nitramines through CO 2 capture using amine-based solvents have been discovered [35]. Thus, the formation of these toxic compounds has to be considered when defining the viability of post-combustion CO 2 capture using amine-based solvents in a global scenario.…”

Section: Reactionmentioning

confidence: 99%

“…Nevertheless, the stability of piperazine may condition its use outside a specific range of operating conditions. Mazari et al [35] presented a review on the recent advances and findings on thermal and oxidative degradation of piperazine. Piperazine may degrade in nitrosamines among which 1-nitrosopiperazine and N,N-dinitrosopiperazine are a main worry due to their high toxicity.…”

Section: Alternative Solvents For Co 2 Capturementioning

confidence: 99%

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Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

2016

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a b s t r a c t a r t i c l e i n f o Available online xxxx Keywords: CO 2 absorption MEA Amines Global demand Alternative solvents Alternative technologiesRecent research on CO 2 capture is focusing on the optimization of CO 2 absorption using amines (mainly monoethanolamine-MEA) in order to minimize the energy consumption of this very energy-intensive process and improve the absorption efficiency. Process optimization is always required and this research is worth and necessary. However, the main concern arises when thinking of the overall process: solvent production, solvent use and regeneration, and environmental effects related to its use/emissions. The production of MEA from ammonia involves important CO 2 emissions during the Haber-Bosch process. The regeneration of the solvent after the absorption is also an indirect source of CO 2 related to the use of fuels (i.e., combustion processes for energy supply). Thus, the evaluation of the overall balance of CO 2 emitted and captured is essential to determine the efficiency of the process. In addition, other environmental impacts associated to the toxicity and environmental fate of the solvent have to be considered. The use of MEA and other amines in CO 2 capture is a point of concern and a global application does not seem to be the best strategy. This review aims at giving an overview of the main implications of using MEA as absorption solvent for CO 2 capture together with the last advances in research to improve the conventional absorption process. Furthermore, alternatives of using other solvents and/or using other technology and their advantages and weak points will be briefly provided. An approach oriented to produce CO 2 -based products with economic value that can be reintegrated in a closed carbon loop, reducing the use of fresh materials and decreasing the production cost, should be the final objective of current research on CO 2 capture.

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Section: Reactionmentioning

confidence: 99%

Section: Alternative Solvents For Co 2 Capturementioning

confidence: 99%

Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

2016

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“…The molecular tweezer 1 can be used as a suitable chemodosimeter for the detection of piperazine. PZ possesses important pharmacological properties and is used, together with its salts, as an anthelmintic [55], in industrial gas treatments such as CO 2 capture system [56,57], and also as the precursor for a class of psychogenic drugs [58,59]. Piperazine may cause allergic dermatitis [60], and it has been demonstrated that, although not extremely toxic, it has a low biodegradability [61].…”

Section: Sensing Piperazinementioning

confidence: 99%

Binding Properties of a Dinuclear Zinc(II) Salen-Type Molecular Tweezer with a Flexible Spacer in the Formation of Lewis Acid-Base Adducts with Diamines

et al. 2021

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In this paper we report the binding properties, by combined 1H NMR, optical absorption, and fluorescence studies, of a molecular tweezer composed of two Zn(salen)-type Schiff-base units connected by a flexible spacer, towards a series of ditopic diamines having a strong Lewis basicity, with different chain length and rigidity. Except for the 1,2-diaminoethane, in all other cases the formation of stable 1:1 Lewis acid-base adducts with large binding constants is demonstrated. For α,ω-aliphatic diamines, binding constants progressively increase with the increasing length of the alkyl chain, thanks to the flexible nature of the spacer and the parallel decreased conformational strain upon binding. Stable adducts are also found even for short diamines with rigid molecular structures. Given their preorganized structure, these latter species are not subjected to loss of degrees of freedom. The binding characteristics of the tweezer have been exploited for the colorimetric and fluorometric selective and sensitive detection of piperazine.

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“…Monoethanolamine (MEA), diethanolamine (DEA), and methyldiethanolamine (MDEA), diglycolamine (DGA), diisopropylamine (DIPA) are the commonly used aqueous alkanolamines for CO2 absorption processes [21][22][23]. However, these solvents entail several potential drawbacks such as low resistance towards thermal and oxidative degradation, solvent loss due to high volatility, the formation of toxic products during CO2 capture, corrosion of equipment, and high energy for solvent regeneration [22,[24][25][26]. Moreover, stoichiometric studies revealed limited loading capacity of 0.5 mol of CO2 per mol of amine for both MEA and DEA [20].…”

Section: Introductionmentioning

confidence: 99%

Investigation of thermophysical properties for aqueous blends of sarcosine with 1-(2-aminoethyl) piperazine and diethylenetriamine as solvents for CO2 absorption

Murshid

Butt

Garg

2019

Journal of Molecular Liquids

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Degradation study of piperazine, its blends and structural analogs for CO2 capture: A review

Cited by 43 publications

References 51 publications

Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

Binding Properties of a Dinuclear Zinc(II) Salen-Type Molecular Tweezer with a Flexible Spacer in the Formation of Lewis Acid-Base Adducts with Diamines

Investigation of thermophysical properties for aqueous blends of sarcosine with 1-(2-aminoethyl) piperazine and diethylenetriamine as solvents for CO2 absorption

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