摘要:
A non-invasive gas analyte sensing and monitoring system and method is provided that is particularly applicable to transcutaneous monitoring of arterial blood gases in a mammal. The system and method relies on diffusion of the analyte to be measured into a diffusion chamber and remote sensing of the analyte in the diffusion chamber using optical chemical sensors and associated optoelectronics.
摘要:
A non-invasive gas analyte sensing and monitoring system and method is provided that is particularly applicable to transcutaneous monitoring of arterial blood gases in a mammal. The system and method relies on diffusion of the analyte to be measured into a diffusion chamber and remote sensing of the analyte in the diffusion chamber using optical chemical sensors and associated optoelectronics.
摘要:
This invention relates to a method for making a carbon steel surface more resistant to fouling and corrosion by subjecting a cleaned carbon steel surface to heating in an oxygen-containing atmosphere followed by exposure of the heated surface to sulfur-containing feeds such that a dense layer of Fe1-x S where X is a number from 0.2 to 0.0 is formed on the steel surface, said dense layer having a thickness of from 0.5 to 200 microns.
摘要:
A reduced or partially reduced nickel-molybdenum catalyst prepared by a process having the steps of 1) reacting nickel carbonate and molybdenum oxide precursors to form nickel molybdate and 2) treating the nickel molybdate under reducing conditions to form the reduced or partially reduced nickel-molybdenum catalyst. There is also a process for making the catalyst. There is also a process for using the catalyst in the hydrogenation of an oxo aldehyde, thereby forming an oxo alcohol of high selectivity. There is also a process for forming an oxo alcohol from the hydroformylation/hydrogenation of an olefinic feedstream. There is also a process for forming an oxo alcohol by contacting formates, dimers, trimers, and organic acids with hydrogen in the presence of a reduced or partially reduced nickel-molybdenum catalyst. The foregoing processes are also useful with a catalyst having the general formula YxZ wherein Y is nickel and/or cobalt and Z is molybdenum and/or tungsten; and wherein x ranges between about 0.25 to about 4.0. There are also reduced or partially reduced catalysts of the general formula NixMo or YxZ wherein x ranges between about 0.25 to about 4.0 and wherein oxide precursors of the catalysts are substantially free of ammonium groups.
摘要:
This invention relates to metal surfaces and a method for reducing fouling of metal surfaces. More particularly, metal surfaces such as piping and heat exchangers that transport or contain corrosive and contaminated materials can be protected by formation of organometallic coatings which are in the range of monolayers in thickness.