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Sustainability
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Environment-Friendly Chemical Processes
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Environment-Friendly Chemical Processes

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Chemical Engineering and Technology".

Deadline for manuscript submissions: closed (31 May 2019) | Viewed by 7341

Special Issue Editor

Prof. Dr. Yu Yang

E-Mail Website
Guest Editor
Department of Chemistry, East Carolina University, Greenville, NC 27858, USA
Interests: pharmaceutical analysis; green chemistry; analytical chemistry; environmental chemistry; subcritical water oxidation; subcritical water extraction and chromatography; supercritical fluid extraction and chromatography; gas chromatography and liquid chromatography; separation and analysis of species from environmental and herbal matrices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We have only one home—the Earth. Protecting our environment is in everyone’s interest. Developing green or greener chemical processes is critical to ensuring sustainability in the chemical industry and contributing to environmental protection.

The aim of this Special Issue of Sustainability is to cover several aspects of green chemical processes with a focus on application of sub- and super-critical fluids in a wide range of chemical processes. The advantage of these chemical processes is to eliminate or minimize the use of hazardous organic solvents. Thus, the alternative processes are not only environmentally friendly, but also reduce the costs in both solvent purchasing and waste disposal.

This Special Issue intends to highlight the progress on environment-friendly chemical processes achieved so far and inspire more scientists to join us in the endeavor of developing green processes in cleaning, extraction, chromatography, synthesis, and environmental remediation.

Prof. Dr. Yu Yang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sustainability
  • subcritical water
  • superheated water
  • high-temperature water
  • pressurized hot water
  • supercritical fluids
  • synthesis
  • cleaning
  • extraction
  • chromatography
  • environmental remediation
  • chemical processes
  • green chemistry
  • soil
  • plants
  • herbs

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Published Papers (2 papers)

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Research

17 pages, 7109 KiB  
Article
The Effects of Pressure and Temperature on the Process of Auto-Ignition and Combustion of Rape Oil and Its Mixtures
by Karol Tucki, Remigiusz Mruk, Olga Orynycz and Arkadiusz Gola
Sustainability 2019, 11(12), 3451; https://doi.org/10.3390/su11123451 - 23 Jun 2019
Cited by 19 | Viewed by 3761
Abstract
The effects of initial pressure and temperature in a constant volume test chamber with a common rail injection system on the processes of self-ignition and combustion of rapeseed oil and various blends of rapeseed oil with diesel oil are explored. Based on the [...] Read more.
The effects of initial pressure and temperature in a constant volume test chamber with a common rail injection system on the processes of self-ignition and combustion of rapeseed oil and various blends of rapeseed oil with diesel oil are explored. Based on the obtained pressure waveforms the amount of emitted heat was determined, and the tested fuels were compared. The variations of a number of physicochemical characteristics that occur during the combustion processes were evaluated for several mixtures of fuel components. It was found that in the case of blends of rapeseed oil with diesel oil, the best results were obtained for a mixture containing 70 weight percent of diesel oil and 30% of rapeseed oil. Full article
(This article belongs to the Special Issue Environment-Friendly Chemical Processes)
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14 pages, 4242 KiB  
Article
Thermodynamic Analysis and Experimental Study of Selective Dehydrogenation of 1,2-cyclohexanediol over Cu2+1O/MgO Catalysts
by Haiou Wang, Qiusheng Yang, Yucong Song and Yanji Wang
Sustainability 2019, 11(3), 902; https://doi.org/10.3390/su11030902 - 10 Feb 2019
Cited by 1 | Viewed by 2989
Abstract
The dehydrogenation of 1,2-cyclohexanediol (CHD) helps in the effective utilization of not only fossil derivatives but also vicinal diols and polyols from sustainable biomass-derived resources. A thermodynamic analysis of CHD dehydrogenation was computed with density functional theory (DFT) calculation using Gaussian 09. The [...] Read more.
The dehydrogenation of 1,2-cyclohexanediol (CHD) helps in the effective utilization of not only fossil derivatives but also vicinal diols and polyols from sustainable biomass-derived resources. A thermodynamic analysis of CHD dehydrogenation was computed with density functional theory (DFT) calculation using Gaussian 09. The result indicates that CHD can be converted to 2-hydroxy cyclohexanone (HCO), 2-hydroxy-2-cyclohexen-1-one (HCEO) and pyrocatechol depending on the degree of dehydrogenation. HCO and HCEO are the stable products of the primary and secondary dehydrogenation. Experimentally, Cu/MgO catalysts were prepared using glucose as a reductant, and were characterized by SEM, TEM, XRD, XPS, TPR, BET and ICP. Furthermore, their catalytic performance regarding the oxygen-free dehydrogenation of CHD was investigated. The results indicate that the primary active crystalline phase of Cu/MgO was Cu2+1O, and that the dehydrogenation products were mainly HCO and HCEO, in accordance with thermodynamic predictions. Upon optimizing the reaction conditions, the total selectivity of HCO and HCEO exceeded 90% and the conversion of CHD was approximately 95%. Full article
(This article belongs to the Special Issue Environment-Friendly Chemical Processes)
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