Results 11 to 20 of about 91,463 (274)

A review of acid recovery from acidic mining waste solutions using solvent extraction [PDF]

open access: yes, 2018
This is the peer reviewed version of the following article: Uchenna Kesieme, Andreas Chrysanthou, Maurizio Catulli, and Chu Yong Cheng, ‘A review of acid recovery from acidic mining waste solutions using solvent extraction’, Journal of Chemical ...
Catulli, Maurizio   +3 more
core   +2 more sources

Development of chiral phosphoric acids based on ferrocene-bridged paracyclophane frameworks [PDF]

open access: yes, 2013
International audienceThis work deals with the development of a new family of planar chiral phosphoric acids, based on a ferrocenophane/paracyclophane scaffold.
Betzer, Jean-François   +7 more
core   +6 more sources

Characterization of Lignin Precipitated From The Soda Black Liquor of Oil Palm Empty Fruit Bunch Fibers by Various Mineral Acids

open access: yesASEAN Journal on Science and Technology for Development, 2017
Soda lignin from oil palm empty fruit bunch was directly isolated by various mineral acids i.e. sulfuric acid, hydrochloric acid, phosphoric acid and nitric acid at three levels of concentration (20% v/v, 60%v/v and concentrated).
M.N Mohamad Ibrahim   +2 more
doaj   +1 more source

l-Amino Acid Production by a Immobilized Double-Racemase Hydantoinase Process: Improvement and Comparison with a Free Protein System [PDF]

open access: yes, 2017
Protein immobilization is proving to be an environmentally friendly strategy for manufacturing biochemicals at high yields and low production costs. This work describes the optimization of the so-called “double-racemase hydantoinase process,” a system of
Clemente Jiménez, María José   +3 more
core   +3 more sources

Straightforward Immobilization of Phosphonic Acids and Phosphoric Acid Esters on Mesoporous Silica and Their Application in an Asymmetric Aldol Reaction

open access: yesNanomaterials, 2019
The combined benefits of moisture-stable phosphonic acids and mesoporous silica materials (SBA-15 and MCM-41) as large-surface-area solid supports offer new opportunities for several applications, such as catalysis or drug delivery.
Christian Weinberger   +9 more
doaj   +1 more source

Reducing Iron Oxide Content in Phosphoric Acid Using Polyacrylates and Phosphonic Acids [PDF]

open access: yesACS Omega
Gustavo Paiva Ribeiro   +3 more
doaj   +2 more sources

N-Triflylphosphorimidoyl Trichloride: A Versatile Reagent for the Synthesis of Strong Chiral Brønsted Acids [PDF]

open access: yes, 2017
A series of strong Brønsted acids has been synthesized in high yields using N-triflylphosphorimidoyl trichloride as reagent.
Kaib, P., Lee, S., List, B.
core   +2 more sources

Potentiodynamic and Quantum Studies of Some Amino Acids as Corrosion Inhibitors for Copper

open access: yesInternational Journal of Electrochemical Science, 2012
A comparative study of different types of amino acids: proline, cysteine, phenyl alanine, alanine, hisitidine and glycine as inhibitors for copper corrosion in 8M phosphoric acid at different temperatures was carried out. Potentiodynamic polarization and
H.H. Abdel Rahman   +2 more
doaj   +1 more source

Chiral phosphoric acid-catalyzed enantioselective phosphinylation of 3,4-dihydroisoquinolines with diarylphosphine oxides

open access: yesCommunications Chemistry, 2023
Catalytic enantioselective phosphinylation of imines with diarylphosphine oxides is a powerful approach to access chiral α-amino diarylphosphine oxides.
Yongbiao Guo   +6 more
doaj   +1 more source

Structural and functional characterization of a cold-adapted stand-alone TPM domain reveals a relationship between dynamics and phosphatase activity [PDF]

open access: yes, 2018
The TPM domain constitutes a family of recently characterized protein domains that are present in most living organisms. Although some progress has been made in understanding the cellular role of TPM-containing proteins, the relationship between ...
Aran, Martin   +5 more
core   +1 more source

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