Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Chemistry Expert

problem 1: In the year 1968, the Shell Oil Company reported that adding tertiary phosphine such as PBu3 to the oxo reaction resulted in hydroformylation occurring at less than 100 atm. Although the new catalyst is a less active hydroformylation catalyst than HCo(CO)3, it is a better hydrogenation catalyst. Separation of catalyst from products is enhanced. The ratio of linear to branched product is as high as 9 to 1. Studies of the reaction failed to observe alkyl or acyl-containing intermediates.

a) Describe the greater selectivity of the new catalyst by drawing a suitable transition state.
b) What are the merits and demerits of the new catalyst being a good hydrogenation catalyst?
c) What does the failure to observe intermediates tell you regarding the likely rate-determining step?
d) Why it is simpler to eradicate the products from the catalyst?

problem 2: Draw a catalytic cycle for phosphine-rhodium-catalyzed hydroformylation. The catalyst precursor is:

H(CO)Rh(PPh3)3

problem 3: Describe why increasing the concentration of phosphine in the phosphine-rhodium cycle exhibits the reaction rate, however as well raises the linear or branched product ratio.

problem 4: Rate of Rh/HI-catalyzed carbonylation of 2-propanol to give a mixture of butanoic and 2-methylpropanoic acids is actually a little faster than that for carbonylation of ethanol and up to seven times more fast than that for 1-propanol. If OA is still the rds in the pathway, what can be said regarding the method of that step when 2-propanol is the starting material? 

Chemistry, Academics

  • Category:- Chemistry
  • Reference No.:- M93195

Have any Question? 


Related Questions in Chemistry

Identify the chemical components and the proportions

Identify the chemical components and the proportions necessary to achieve a buffer with the desired pH. Include relevant calculations in your answer.

Explain why acidic rain produced as a result of excess

Explain why acidic rain produced as a result of excess sulphur dioxide in the atmosphere can cause degradation of buidings.

A solution containing the complex formed between biiii and

A solution containing the complex formed between Bi(III) and thiourea has a molar absorptivity of 9.32x10^3 Lxcm^-1xmol^-1 at 470 nm. What is the absorbance of a 6.24 x10^-5 M solution of the complex in a 1.00-cm cell? W ...

A 1000l tank at 89degc is filled with 786g of boron

A 10.00L tank at 8.9°C is filled with 7.86g of boron trifluoride gas and 7.09g of dinitrogen difluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction of each gas ...

Instructionscandidates are to answer all questionsall parts

Instructions: Candidates are to answer ALL questions/ALL parts of questions This assessment is designed to assess the following learning outcomes of the module: 1. Discuss and critically evaluate the principles and appli ...

Could someone please help me balance the following redox

Could someone please help me Balance the following redox reaction in a basic solution:  CuS + NO 3 -   Ò  Cu 2+  + NO + S 8

A 06745 gram sample of khp reacts with 4175 ml of koh

A 0.6745 gram sample of KHP reacts with 41.75 mL of KOH solution for complete neutralization. What is the molarity of the KOH solution? (Molecular weight of KHP = 204 g/mol. KHP has one acidic hydrogen.)

A cleaning solution is found to have a oh- 32 x 10-12m

A cleaning solution is found to have a [OH-] = 3.2 x 10 -12 M. What is the [H 3 O + ] and is the solution acidic or basic?

How many grams of silver nitrate are required to produce

How many grams of silver nitrate are required to produce 44.00 g of aluminum nitrate? 6AgNO 3   +  Al 2 (SO 4 ) 3   →  3Ag 2 SO 4   +  2Al(NO 3 ) 3

Titanium reacts with hydrogen peroxide in 100 m sulfuric

Titanium reacts with hydrogen peroxide in 1.00 M sulfuric acid to form a colored complex. If a 2.00x10^-5 M solution absorbs 31.5% of the radiation at 415 nm, what would be: the absorbable, the transmittance, and the per ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro