Early stage reversed crystal growth of zeolite A and its phase transformation to sodalite

Journal of the American Chemical Society
Heather GreerWuzong Zhou

Abstract

Microstructural analysis of the early stage crystal growth of zeolite A in hydrothermal synthetic conditions revealed a revised crystal growth route from surface to core in the presence of the biopolymer chitosan. The mechanism of this extraordinary crystal growth route is discussed. In the first stage, the precursor and biopolymer aggregated into amorphous spherical particles. Crystallization occurred on the surface of these spheres, forming the typical cubic morphology associated with zeolite A with a very thin crystalline cubic shell and an amorphous core. With a surface-to-core extension of crystallization, sodalite nanoplates were crystallized within the amorphous cores of these zeolite A cubes, most likely due to an increase of pressure. These sodalite nanoplates increased in size, breaking the cubic shells of zeolite A in the process, leading to the phase transformation from zeolite A to sodalite via an Ostwald ripening process. Characterization of specimens was performed using scanning electron microscopy and transmission electron microscopy, supported by other techniques including X-ray diffraction, solid-state NMR, and N(2) adsorption/desorption.

References

Mar 11, 2004·Chemical Communications : Chem Comm·Jennifer E ReadmanPaul A Anderson
Jan 13, 2005·Journal of the American Chemical Society·Paul A WrightMar Arranz
Oct 5, 2007·The Journal of Investigative Dermatology·Megan MowbrayRichard B Weller
Feb 7, 2008·Journal of the American Chemical Society·Junfeng GengBrian F G Johnson
May 30, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Wei FanTatsuya Okubo
Oct 4, 2008·Angewandte Chemie·Jianfeng YaoHuanting Wang
Mar 6, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Peter LintonViveka Alfredsson

❮ Previous
Next ❯

Citations

Mar 25, 2014·Journal of Colloid and Interface Science·Pankaj SharmaChurl Hee Cho
Sep 17, 2010·Journal of the American Chemical Society·Xianfeng YangWuzong Zhou
Jan 5, 2013·Journal of the American Chemical Society·Bin LiDongyuan Zhao
Dec 26, 2012·Journal of the American Chemical Society·Miguel MaldonadoJeffrey D Rimer
Sep 22, 2015·Physical Chemistry Chemical Physics : PCCP·Meilin LvXiaoxiang Xu
Nov 19, 2015·Chemistry : a European Journal·Katherine SelfWuzong Zhou
Jan 3, 2019·Chemical Communications : Chem Comm·Savannah J TurnerWuzong Zhou
Apr 22, 2010·Advanced Materials·Wuzong Zhou
Apr 15, 2011·Chemistry : a European Journal·Limin RenFeng-Shou Xiao
May 11, 2013·Chemical Communications : Chem Comm·Katherine SelfWuzong Zhou
Aug 26, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Claudia BelvisoFrancesco Cavalcante
Nov 20, 2012·Chemistry : a European Journal·Qing YangLixiong Zhang
Oct 30, 2020·Materials·Claudia Belviso, Francesco Cavalcante
Aug 20, 2010·Inorganic Chemistry·Liqiao ChenMingmei Wu
Sep 13, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Niklas HedinDiana Bernin

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.