by a R4P+Cl− PTC) Subsequent work by Herriott and Picker[2] demonstrated that many such reactions can be performed rapidly at around room temperature by using catalysts such as tetra-n-butylammonium bromide or methyltrioctylammonium chloride in benzene/water systems. By using a PTC process‚ one can achieve faster reactions‚ obtain higher conversions or yields‚ make fewer byproducts‚ eliminate the need for expensive or dangerous solvents which dissolve all the reactants in one phase‚ eliminate
Premium Chemistry Ion Chemical reaction
HANOI—As Vietnam’s economy has boomed in recent decades‚ so too have pollution levels in its major cities‚ with experts concerned that air pollution could pose a major public health concern. "Environmental pollution in Vietnam is a real problem‚" said Tuong Lai‚ former dean of Vietnam’s Social Science Institute. "It’s not just foreign visitors who have complained about our dust pollution—people in our country are also very dissatisfied with it‚" he said. A study conducted by employment consultants
Free Pollution Environmentalism Ho Chi Minh City
SKPP 1313 Fundamentals of Petroleum Engineering Quiz 1 (20 marks) Name: _____________________________________________________ Answer all questions 1) Petroleum engineer can be divided into several groups. Name one of them and briefly explain his main duty. [3 marks] __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________
Premium Igneous rock Sedimentary rock Rock
NAME : ……………………………………………….. GROUP :………………………………………………... TUTORIAL 2 (ALPH20) WAVES WAVES BEHAVIOR 1. To demonstrate interference of light waves‚ Thomas Young allowed light from an illuminated single slit to fall on a pair of narrow closely-spaced slits. Explain: a. Why light from separate lamp bulbs can never produce an interference pattern? b. Why double slits used as above do give an interference pattern? How would the interference pattern differ
Premium Wavelength Light Quantum mechanics
at di!erent temperatures and "tted successfully with a rate equation based on autocatalysis by total products. The values of rate constants and activation energy were determined. Recognising the fact that the industrial route to cyclohexene from benzene hydrogenation yields a mixture of cyclohexene and cyclohexane which are di$cult to separate‚ some experiments on oxidation of the mixture of cyclohexene and cyclohexane were also conducted. The values of rate constants remain unchanged in the presence
Premium Reaction rate Chemical reaction Chemical kinetics
CHNG 1103 INTRODUCTION OF MATERIAL AND ENERGY TRANSFORMATIONS COURSE NOTES PART A: MATERIAL BALANCE GENERAL INFORMATION LECTURERS Dr. Marjorie Valix (Part A: Material Balance) email: mvalix@usyd.edu.au office: Rm 444 Chemical Engineering Blg. Phone: 93514995 (Direct) or 9351 2455 (General Office/Messages) Dr. Vincent Gomes (Part B: Energy Balance) Email: vgomes@usyd.edu.ua Office: Rm 452 Chemical Engineering Blg. Phone: 9351 4868 TEXTBOOK R.M. Felder and R.W. Rousseau “ Elementary
Premium Chemical engineering Mass Kilogram
Review paper. Catalysts analysis for MSW pyrolysis and gasification Tursunov Obida‚ Khairuddin Md Isaa‚ Dr. Ong Soon Ana aSchool of Environmental Engineering‚ University Malaysia Perlis UniMAP‚ Arau 02600‚ Perlis‚ Malaysia Abstract MSW pyrolysis and gasification are the possible alternative to the direct use of fossil fuel energy. MSW‚ a CO2 neutral source of renewable fuel‚ can contribute to the demand for heat‚ electricity and synthesis gas (syngas). Nevertheless‚ there are inefficiencies in
Premium Carbon monoxide Hydrogen Coal
POLYSTYRENE Project Report By Pramod. M. Munjgude (PG/M/090021) Guided By Prof. Mrs. Sucheta. B. Avasthi Packaging technology [pic] INDIAN INSTITUTE OF PACKAGING ANDHERI (E)‚ MUMBAI September 2009 ACKNOWLEDGEMENT I express my sincere gratitude to my guide Prof. Mrs. Sucheta B‚ Indian Institute of Packaging‚ Mumbai for her valuable guidance and support for the completion of this report. I am thankful to Indian institute of Packaging
Premium Polystyrene
Microscale Crystallization – Craig Tube For this experiment‚ we had to find the percent recovery and melting point of pure sulfanilamide from impure sulfanilamide using the crystallization technique. To start‚ .1004 grams of impure sulfanilamide was put into a Craig tube with enough ethyl alcohol to barely pass the top of the sulfanilamide. The Craig tube was put into a stone block until boil‚ then check to see if the solid material had dissolve. With the addition of two more drops from a supply
Premium Solubility Ethanol Crystal
they continue to bring in prosperity to Waukegan. What they were allowed to do was dump millions of gallons to toxic sludge into lake Michigan‚ sludge containing Polychlorinated Biphenyl (PCB)‚ Arsenic‚ Polycylic Aromatic Hydrocarbons‚ Ammonia‚ Benzene and Trichloroethylene toxins. Waukegan Harbor became the Chenobol of the Midwest when this appaling act of polluting was discovered in the 1970s. Waukegan‚ a city that sits north of Chicago‚ Chicago‚ a city that depends on lake Michigan for drinking
Premium Root Soil United States Environmental Protection Agency