Removal or storage of environmental pollutants and alternative fuel sources with inorganic adsorbents via host–guest encapsulation

Cramer, Alisha J.; Cole, Jacqueline M.

doi:10.1039/c7ta02401k

Cited by 36 publications

(14 citation statements)

References 228 publications

(353 reference statements)

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“…Removal of H 2 S is an obliged process in industry because H 2 S is toxic, even low amounts of it are highly corrosive for the refinery equipment and transport lines, and lead to poisoning of many catalysts. Furthermore, H 2 S (oxidized to SO 2 ) originates acid rains and is disliked in all private and public environments because of its bad smell [1]. H 2 S therefore represents a serious problem for people living or working close to industrial plants [2].…”

Section: Introductionmentioning

confidence: 99%

Chemical trapping of gaseous H 2 S at high and low partial pressures by an iron complex immobilized inside the montmorillonite interlayer

Malferrari

Castellini

Bernini

et al. 2018

Microporous and Mesoporous Materials

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Section: Introductionmentioning

confidence: 99%

Chemical trapping of gaseous H 2 S at high and low partial pressures by an iron complex immobilized inside the montmorillonite interlayer

Malferrari

Castellini

Bernini

et al. 2018

Microporous and Mesoporous Materials

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“…Evaluating host-guest and guest-guest interactions5.5.1. Environmentally driven studiesInorganic host materials are used for a wide variety of environmentally beneficial applications 417. Industrial wastewater, sewage, or rainfall/irrigation runoff may contain detrimental additives in concentrations that make them unsuitable for human and animal consumption.…”

mentioning

confidence: 99%

Combined solid-state NMR, FT-IR and computational studies on layered and porous materials

et al. 2018

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Understanding the structure-property relationship of solids is of utmost relevance for efficient chemical processes and technological applications in industries. This contribution reviews the concept of coupling three well-known characterization techniques (solid-state NMR, FT-IR and computational methods) for the study of solid state materials which possess 2D and 3D architectures and discusses the way it will benefit the scientific communities. It highlights the most fundamental and applied aspects of the proactive combined approach strategies to gather information at a molecular level. The integrated approach involving multiple spectroscopic and computational methods allows achieving an in-depth understanding of the surface, interfacial and confined space processes that are beneficial for the establishment of structure-property relationships. The role of ssNMR/FT-IR spectroscopic properties of probe molecules in monitoring the strength and distribution of catalytic active sites and their accessibility at the porous/layered surface is discussed. Both experimental and theoretical aspects will be considered by reporting relevant examples. This review also identifies and discusses the progress, challenges and future prospects in the field of synthesis and applications of layered and porous solids.

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“…In particular, physical and chemical considerations from daughter products resulting from continued radioactive decay must be investigated, as well as the effects of extensive radiation exposure on the stability of the host structure, including dose, type of radiation, and decay energies. These additional factors are not trivial, requiring considerable testing and thought, given that the composition of the anticipated radionuclides to be included in the host phosphate material will most likely vary significantly from waste stream to waste stream [1].…”

Section: Evolution Of Cage Volumes Through the Phase Transitionsmentioning

confidence: 99%

“…Nuclear waste containment is an important field of environmental science given the desperate need to find cleaner, safer, and more sustainable ways to store spent nuclear fuel. Host-guest media is one possible option whereby crystalline materials that contain nanoporous framework structures act as hosts for encapsulating radioactive ions and oxides from nuclear waste streams [1]. Rare-earth ultraphosphates were recently identified as possible host media for nuclear waste storage, in a screening study of a wide range of nanoporous framework materials [2].…”

Section: Introductionmentioning

confidence: 99%

Host-guest prospects of neodymium and gadolinium ultraphosphate frameworks for nuclear waste storage: Multi-temperature topological analysis of nanoporous cages in RP5O14

Cramer

Cole

2018

Journal of Solid State Chemistry

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Rare-earth ultraphosphate (RP 5 O 14) framework materials are potential host media for nuclear waste storage, since cages within their nanoporous structures have volumes that match well those of prospective guests such as uranium or plutonium ions. Good volume matches of host cages and guest compounds are nonetheless not the only structural requirement for ensuring viable nuclear waste storage. Host structures also need to be stable enough to withstand the typical environmental conditions of long-term storage of spent nuclear fuel. To this end, the nanoporous cage topologies of neodymium and gadolinium ultraphosphate, NdP 5 O 14 and GdP 5 O 14 , are investigated as a function of temperature. Topological analysis shows that, while both compounds are essentially isostructural, thus displaying the same type of cage structures, the cage volumes of NdP 5 O 14 are significantly larger than those of GdP 5 O 14 , with one stark exception. This exception concerns the smallest cage of NdP 5 O 14 , whose 8/4 topology lacks structural cross-linking that would otherwise give it much more strength. This 'squashed' cage appears to owe its origins to the specific nature of crystallogra phic twinning in NdP 5 O 14 , which causes strain that needs alleviating; squashing the 8/4 cage in NdP 5 O 14 would be the most susceptible option towards this end, since its cage manifests the weakest structural construct. GdP 5 O 14 succumbs to a gradual contraction of its 8/4 cage only with increasing temperature above 300 K; this is well below its second-order monoclinic-toorthorhombic phase transition at 420-430 K; which is 420 K for NdP 5 O 14. Fortunately, the volumes of heavy metal ions that arise from spent nuclear fuels do not match the size requirements of cages with 8/4 topology in RP 5 O 14 hosts needed for encapsulation; otherwise, radiation leakage of such containment would present a risk. Both NdP 5 O 14 and GdP 5 O 14 would therefore seem to offer good prospects as host media for nuclear waste storage.

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Removal or storage of environmental pollutants and alternative fuel sources with inorganic adsorbents via host–guest encapsulation

Abstract: A review of the use of inorganic materials as host media for the storage of various wastes and alternative fuels.

Cited by 36 publications

References 228 publications

Chemical trapping of gaseous H 2 S at high and low partial pressures by an iron complex immobilized inside the montmorillonite interlayer

Chemical trapping of gaseous H 2 S at high and low partial pressures by an iron complex immobilized inside the montmorillonite interlayer

Combined solid-state NMR, FT-IR and computational studies on layered and porous materials

Host-guest prospects of neodymium and gadolinium ultraphosphate frameworks for nuclear waste storage: Multi-temperature topological analysis of nanoporous cages in RP5O14

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