نتایج جستجو برای: green chemistry

تعداد نتایج: 245338  

Journal: :Beilstein Journal of Organic Chemistry 2006
Jianguo Zhang Arthur Ragauskas

A novel, green chemistry, glycosylation strategy was developed based upon the use of ionic liquids. Research studies demonstrated that thiomethyl glycosides could readily be activated with methyl trifluoromethane sulfonate, using 1-butyl-3-methylimidazolium tetrafluoroborate as a solvent. This green chemistry glycosylation strategy provided disaccharides with typical yields averaging 75%. The i...

2016
Li Shuai Masoud Talebi Amiri Jeremy S. Luterbacher

The cleavage of b-O-4 linkages in lignin can generate monomers with a phenyl propane structure that can easily be upgraded into valuable hydrocarbon biofuels and renewable aromatic chemicals. High-yield lignin monomer production from extracted (or technical) lignin that is produced in a practical way could facilitate the productivity and profitability of biomass conversion processes. However, i...

Journal: :Environmental science & technology 2009
Rebecca Renner

ger's (R-CA) signature on Sep-tember 29, California became the first U.S. state to approve two laws that will move its regulatory scheme toward a comprehensive chemicals policy. The legislation is intended to improve public and environmental health protection and encourage green chemistry-the design of chemical products and processes that reduce or eliminate the use or generation of hazardous s...

Journal: :Environmental science & technology 2012
Kira J M Matus William C Clark Paul T Anastas Julie B Zimmerman

This paper investigates the conditions under which firms are able to develop and implement innovations with sustainable development benefits. In particular, we examine "green chemistry" innovations in the United States. Via interviews with green chemistry leaders from industry, academia, nongovernmental institutions (NGOs), and government, we identified six major categories of challenges common...

Journal: :Accounts of chemical research 2002
Joseph Wang

This Account presents a survey of recent advances in electrochemical sensing technology relevant to green analytical chemistry and examines the potential advantages, limitations, and applications of these monitoring devices. Stricter environmental control and effective process monitoring have created considerable demands for innovative analytical methodologies. New devices and protocols, with n...

A highly efficient, simple and clean solvent-free protocol for the synthesis of polyhydroquinolines is described. The one-pot multi-component condensation reaction between arylaldehydes, dimedone (5,5-dimethylcyclohexane-1,3-dione), β-ketoesters and ammonium acetate in the presence of catalytic amount of (2.5 mol%) melamine trisulfonic acid (MTSA) as a recyclable, green and attractive sulfonic ...

2017
Hossein Jahangirian Ensieh Ghasemian Lemraski Thomas J Webster Roshanak Rafiee-Moghaddam Yadollah Abdollahi

This review discusses the impact of green and environmentally safe chemistry on the field of nanotechnology-driven drug delivery in a new field termed "green nanomedicine". Studies have shown that among many examples of green nanotechnology-driven drug delivery systems, those receiving the greatest amount of attention include nanometal particles, polymers, and biological materials. Furthermore,...

2000
Masakazu Anpo

Environmental pollution and destruction on a global scale have drawn attention to the vital need for totally new environmentally friendly, clean chemical technologies and processes, the most important challenge facing chemical scientists in the field of green chemistry. Strong contenders as environmentally harmonious catalysts are photocatalysts that operate at room temperature and in a clean m...

2018
Shagufta Perveen Areej Mohammad Al-Taweel

2015
Seung-Kyu Lee Hyeon-Soo Park

OBJECTIVES Despite the great contribution made by chemical substances to the development of modern civilization, their indiscriminate use has caused various kinds of damage to the global environment and human beings. Accordingly, the major developed countries and international society have tried to ensure the safe use of chemicals and a reduction in the use of hazardous chemicals through the es...

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