Zeolite A synthesis employing a brazilian coal ash as the silicon and aluminum source and its applications in adsorption and pigment formulation

Autor: Lindiane Bieseki, Fábio Garcia Penha, Sibele Berenice Castellã Pergher

Publikováno v: Materials Research, Vol 16, Iss 1, Pp 38-43 (2013)

Zeolite A was synthesized using the coal ash from Siderópolis/RS - Brazil. The synthesis was based on a standard IZA synthesis using coal ash as the Si and Al source. XRF analysis showed that the coal ash has a Si/Al ratio of 1.52, which is close to

Externí odkaz: https://doaj.org/article/84d5ebaf42a643eb8e77602136773baf

Adsorção de xantatos sobre pirita Adsorption of xanthate on pyrite

Autor: Fábio Garcia Penha, Vivian Cristina Spier, Nito Angelo Debacher

Publikováno v: Química Nova, Vol 24, Iss 5, Pp 612-615 (2001)

This paper presents a study of adsorption of xanthate with alkyl chain of two (C2XK), four (C4XK) and eight (C8XK) atoms of carbon, on pyrite from Santa Catarina, Brazil. The results showed that pyrite surface changes from hydrophilic to hydrophobic

Externí odkaz: https://doaj.org/article/06abfa081c3746048d3e363783e70856

Zeolite A synthesis employing a brazilian coal ash as the silicon and aluminum source and its applications in adsorption and pigment formulation

Autor: Sibele B. C. Pergher, Fábio Garcia Penha, Lindiane Bieseki

Publikováno v: Materials Research, Volume: 16, Issue: 1, Pages: 38-43, Published: 26 OCT 2012
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Materials Research, Vol 16, Iss 1, Pp 38-43 (2013)
Materials Research v.16 n.1 2013
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Iss ahead, p 0 (2012)

Zeolite A was synthesized using the coal ash from Siderópolis/RS - Brazil. The synthesis was based on a standard IZA synthesis using coal ash as the Si and Al source. XRF analysis showed that the coal ash has a Si/Al ratio of 1.52, which is close to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0185168606b68f7fc390a812add2ddb1
https://doi.org/10.1590/s1516-14392012005000144

Flotação da mistura argila-quartzo com surfactantes e estudos de pilarização

Autor: Janaina Piasson, Christian Wittee, Fábio Garcia Penha, Sibele B. C. Pergher, Francine Bertella, Helio C. M. Lengler

Publikováno v: Química Nova, Vol 34, Iss 3, Pp 468-471 (2011)
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Química Nova v.34 n.3 2011
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ

Clay is often employed as a catalyst, but quartz impurities can decrease the catalytic efficiency. Fine particles of clay can be purified by flotation. We examined the cationic surfactant hexadecyltrimethylammonium bromide (HTAB), the anionic sodium

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14a745b8418cf3491fe125713c543165
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000300019&lng=en&tlng=en

Estudo da adsorção de compostos sulfurados empregando zeólitas contendo zinco

Autor: Robison P. Scherer, Sibele B. C. Pergher, Marcelo Luis Mignoni, Fábio Garcia Penha, Álvaro L. Malvesti

Publikováno v: Química Nova v.32 n.6 2009
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Química Nova, Volume: 32, Issue: 6, Pages: 1491-1494, Published: 2009

This paper deals with an adosrption of sulphur compounds employing zeolites containing zinc. The zeolites employed were commercial NaY and Beta. The zinc was incorporated in three levels: 0.5; 1.0 and 5%. The sulphur compounds studied were benzothiop

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da57ce4b498b16a94f979dc7c931775d
https://doi.org/10.1590/s0100-40422009000600024