Patents by Inventor Machteld M. Mertens
Machteld M. Mertens has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6797852Abstract: This invention is directed to a method of making an olefin product from an oxygenate feedstock and a method of protecting catalytic activity of a silicoaluminophosphate molecular sieve. The methods comprise providing a silicoaluminophosphate molecular sieve having catalytic sites within the molecular sieve; shielding the catalytic sites to protect from loss of catalytic activity; and contacting the protected sieve in its activated state with an oxygenate feedstock under conditions effective to produce an olefin product before undesirable loss of catalytic activity. Undesirable loss in catalytic activity occurs when activated molecular sieve contacting the oxygenate feedstock has a methanol uptake index of at least 0.15.Type: GrantFiled: July 26, 2002Date of Patent: September 28, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Marcel J. G. Janssen, Cornelius W. M. Van Oorschot, Shun C. Fung, Luc R. M. Martens, Wilfried J. Mortier, Ronald G. Searle, Machteld M. Mertens, Stephen N. Vaughn
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Patent number: 6787501Abstract: The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to making a formulated molecular sieve catalyst composition from a slurry of formulation composition of a synthesized molecular sieve that has not been fully dried, a binder and an optional matrix material. In a more preferred embodiment, the weight ratio of the binder to the molecular sieve and/or the solid content of the slurry is controlled to provide an improved attrition resistant catalyst composition, particularly useful in a conversion process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock.Type: GrantFiled: June 24, 2002Date of Patent: September 7, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen N. Vaughn, Yun-feng Chang, Luc R. M. Martens, Kenneth R. Clem, Machteld M. Mertens, Albert E. Schweizer
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Patent number: 6740790Abstract: Disclosed is a method for making olefin product from an oxygenate-containing feedstock. In the method, a silicoaluminophosphate molecular sieve catalyst is contacted with the oxygenate-containing feedstock in a reactor at an average catalyst feedstock exposure index of at least 1.0. The method produces lower coke yield and provides an olefin product which is low in C1-C4 paraffin content. The invention is particularly effective in producing an olefin product having a very low propane content.Type: GrantFiled: May 14, 2002Date of Patent: May 25, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Keith H. Kuechler, Marcel J. G. Janssen, Stephen N. Vaughn, Shun C. Fung, Nicolas P. Coute, Jeffrey Scott Smith, James R. Lattner, Jeffrey L. White, Teng Xu, William L. Kuechler, Sr., Machteld M. Mertens, Cornelius W. M. Van Oorschot
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Patent number: 6685905Abstract: In SAPO manufacture, handling of the synthesis mixture is facilitated by providing an initial aluminium-containing aqueous slurry with an H2O:Al2O3 weight ratio of 3:1 to 8:1.Type: GrantFiled: February 13, 2002Date of Patent: February 3, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Machteld M. Mertens, Brita Engels
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Publication number: 20040015030Abstract: This invention is directed to a method of making an olefin product from an oxygenate feedstock and a method of protecting catalytic activity of a silicoaluminophosphate molecular sieve. The methods comprise providing a silicoaluminophosphate molecular sieve having catalytic sites within the molecular sieve; shielding the catalytic sites to protect from loss of catalytic activity; and contacting the protected sieve in its activated state with an oxygenate feedstock under conditions effective to produce an olefin product before undesirable loss of catalytic activity. Undesirable loss in catalytic activity occurs when activated molecular sieve contacting the oxygenate feedstock has a methanol uptake index of at least 0.15.Type: ApplicationFiled: July 9, 2003Publication date: January 22, 2004Inventors: Marcel J.G. Janssen, Cornelius W.M. Van Oorschot, Shun C. Fung, Luc R.M. Martens, Wilfried J. Mortier, Ronald G. Searle, Machteld M. Mertens, Stephen N. Vaughn
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Publication number: 20030153799Abstract: In SAPO manufacture, handling of the synthesis mixture is facilitated by providing an initial aluminium-containing aqueous slurry with an H2O:Al2O3 weight ratio of 3:1 to 8:1.Type: ApplicationFiled: February 13, 2002Publication date: August 14, 2003Inventors: Machteld M. Mertens, Brita Engels
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Publication number: 20030092951Abstract: The invention is directed to a method for making a silicoaluminophosphate (SAPO) molecular sieve from a reaction mixture comprising components present in amounts sufficient to form the SAPO, the reaction mixture having a first pH. The method comprises the steps of: adding an acid to the reaction mixture after the reaction mixture undergoes a change in pH from the first pH; and crystallizing the SAPO from the reaction mixture. The present invention is also directed to a silicoaluminophosphate molecular sieve made by this process.Type: ApplicationFiled: December 31, 2002Publication date: May 15, 2003Inventors: Machteld M. Mertens, Brita Engels, Ronald G. Searle, Grigore Pop, Irina Rodica Tamas, Rodica Ganea, Ruxandra Birjega
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Publication number: 20030055304Abstract: Disclosed is a method of heat treating a molecular sieve. The method comprises providing a template-containing molecular sieve, heating the molecular sieve under conditions effective to remove a portion of the template from the molecular sieve, and cooling the heated molecular sieve to leave an amount of template effective to cover catalytic sites within the molecular sieve. A catalyst composition is, also provided which comprises a molecular sieve having a microporous structure and a binder, wherein between 10 and 90 vol % of the microporous structure is occupied by a material, the material comprising a template or a carbonaceous residue of a template, and the catalyst composition exhibits a Davison Index of not greater than 30.Type: ApplicationFiled: October 28, 2002Publication date: March 20, 2003Inventors: Shun C. Fung, Marcel J.G. Janssen, Stephen N. Vaughn, Machteld M. Mertens, Albert Edward Schweizer, Cornelius W.M. Van Oorschot, Luc R.M. Martens, Richard B. Hall, Wilfried J. Mortier, Ronald G. Searle, Yi-Gang Xiong
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Patent number: 6521562Abstract: A method of making a molecular sieve catalyst by preparing a catalyst slurry containing molecular sieve, binder and a matrix material and directing the slurry to a forming unit. The catalyst slurry is prepared by using a microfiltration process whereby the molecular sieve is washed and concentrated from a preparation medium without having to isolate the molecular sieve in a dry or semi-dry form. The catalyst is used to make ethylene and propylene from an oxygenate.Type: GrantFiled: September 28, 2000Date of Patent: February 18, 2003Assignee: ExxonMobil Chemical Patents, Inc.Inventors: Kenneth R. Clem, Luc R. M. Martens, Stephen N. Vaughn, Paul R. Stafford, John W. Kress, Machteld M. Mertens
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Patent number: 6514899Abstract: The invention is directed to a method for making a silicoaluminophosphate (SAPO) molecular sieve from a reaction mixture comprising components present in amounts sufficient to form the SAPO, the reaction mixture having a first pH. The method comprises the steps of: adding an acid to the reaction mixture after the reaction mixture undergoes a change in pH from the first pH; and crystallizing the SAPO from the reaction mixture. The present invention is also directed to a silicoaluminophosphate molecular sieve made by this process.Type: GrantFiled: October 2, 2000Date of Patent: February 4, 2003Assignee: ExxonMobil Chemical Patents, Inc.Inventors: Machteld M. Mertens, Brita Engels, Ronald G. Searle, Grigore Pop, Irina Rodica Tamas, Rodica Ganea, Ruxandra Birjega
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Publication number: 20030018228Abstract: The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to making a formulated molecular sieve catalyst composition from a slurry of formulation composition of a synthesized molecular sieve that has not been fully dried, a binder and an optional matrix material. In a more preferred embodiment, the weight ratio of the binder to the molecular sieve and/or the solid content of the slurry is controlled to provide an improved attrition resistant catalyst composition, particularly useful in a conversion process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock.Type: ApplicationFiled: June 24, 2002Publication date: January 23, 2003Inventors: Stephen N. Vaughn, Yun-feng Chang, Luc R.M. Martens, Kenneth R. Clem, Machteld M. Mertens, Albert E. Schweizer
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Publication number: 20030018229Abstract: The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to making a formulated molecular sieve catalyst composition from a slurry of formulation composition of a synthesized molecular sieve that has not been fully dried, a binder and an optional matrix material. In a more preferred embodiment, the weight ratio of the binder to the molecular sieve and/or the solid content of the slurry is controlled to provide an improved attrition resistant catalyst composition, particularly useful in a conversion process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock.Type: ApplicationFiled: June 24, 2002Publication date: January 23, 2003Inventors: Stephen N. Vaughn, Yun-Feng Chang, Luc R.M. Martens, Kenneth R. Clem, Machteld M. Mertens, Albert E. Schweizer
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Patent number: 6503863Abstract: Disclosed is a method of heat treating a molecular sieve. The method comprises providing a template-containing molecular sieve, heating the molecular sieve under conditions effective to remove a portion of the template from the molecular sieve, and cooling the heated molecular sieve to leave an amount of template effective to cover catalytic sites within the molecular sieve. A catalyst composition is also provided which comprises a molecular sieve having a microporous structure and a binder, wherein between 10 and 90 vol % of the microporous structure is occupied by a material, the material comprising a template or a carbonaceous residue of a template, and the catalyst composition exhibits a Davison Index of not greater than 30.Type: GrantFiled: August 15, 2001Date of Patent: January 7, 2003Assignee: ExxonMobil Chemical Patents, Inc.Inventors: Shun C. Fung, Marcel J. G. Janssen, Stephen N. Vaughn, Machteld M. Mertens, Albert Edward Schweizer, Luc R. M. Martens, Richard B. Hall, Wilfried J. Mortier, Ronald G. Searle, Yi-Gang Xiong
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Publication number: 20020198427Abstract: This invention is directed to a method of making an olefin product from an oxygenate feedstock and a method of protecting catalytic activity of a silicoaluminophosphate molecular sieve. The methods comprise providing a silicoaluminophosphate molecular sieve having catalytic sites within the molecular sieve; shielding the catalytic sites to protect from loss of catalytic activity; and contacting the protected sieve in its activated state with an oxygenate feedstock under conditions effective to produce an olefin product before undesirable loss of catalytic activity. Undesirable loss in catalytic activity occurs when activated molecular sieve contacting the oxygenate feedstock has a methanol uptake index of at least 0.15.Type: ApplicationFiled: July 26, 2002Publication date: December 26, 2002Inventors: Marcel J.G. Janssen, Cornelius W.M. Van Oorschot, Shun C. Fung, Luc R.M. Martens, Wilfried J. Mortier, Ronald G. Searle, Machteld M. Mertens, Stephen N. Vaughn
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Publication number: 20020169349Abstract: Disclosed is a method for making olefin product from an oxygenate-containing feedstock. In the method, a silicoaluminophosphate molecular sieve catalyst is contacted with the oxygenate-containing feedstock in a reactor at an average catalyst feedstock exposure index of at least 1.0. The method produces lower coke yield and provides an olefin product which is low in C1-C4 paraffin content. The invention is particularly effective in producing an olefin product having a very low propane content.Type: ApplicationFiled: May 14, 2002Publication date: November 14, 2002Inventors: Keith H. Kuechler, Marcel J.G. Janssen, Stephen N. Vaughn, Shun C. Fung, Nicolas P. Coute, Jeffrey Scott Smith, James R. Lattner, Jeffrey L. White, Teng Xu, William L. Kuechler, Machteld M. Mertens, Cornelius W.M. Van Oorschot
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Publication number: 20020165090Abstract: The present invention relates to a silicoaluminophosphate molecular sieve comprising at least one intergrown phase of molecular sieves having AEI and CHA framework types, wherein said intergrown phase has an AEI/CHA ratio of from about 5/95 to 40/60 as determined by DIFFaX analysis, using the powder X-ray diffraction pattern of a calcined sample of said silicoaluminophosphate molecular sieve. It also relates to methods for its preparation and to its use in the catalytic conversion of methanol to olefins.Type: ApplicationFiled: March 7, 2002Publication date: November 7, 2002Inventors: Marcel J.G. Janssen, An Verberckmoes, Machteld M. Mertens, Antonie Jan Bons, Wilfried J. Mortier
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Publication number: 20020165089Abstract: The present invention relates to a silicoaluminophosphate molecular sieve comprising at least one intergrown phase of molecular sieves having AEI and CHA framework types, wherein said intergrown phase has an AEI/CHA ratio of from about 5/95 to 40/60 as determined by DIFFaX analysis, using the powder X-ray diffraction pattern of a calcined sample of said silicoaluminophosphate molecular sieve. It also relates to methods for its preparation and to its use in the catalytic conversion of methanol to olefins.Type: ApplicationFiled: August 7, 2001Publication date: November 7, 2002Inventors: Marcel J.G. Janssen, Shun C. Fung, An A. Verberckmoes, Machteld M. Mertens, Wilfried J. Mortier
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Patent number: 6455748Abstract: This invention is directed to a method of making an olefin product from an oxygenate feedstock and a method of protecting catalytic activity of a silicoaluminophosphate molecular sieve. The methods comprise providing a silicoaluminophosphate molecular sieve having catalytic sites within the molecular sieve; shielding the catalytic sites to protect from loss of catalytic activity; and contacting the protected sieve in its activated state with an oxygenate feedstock under conditions effective to produce an olefin product before undesirable loss of catalytic activity. Undesirable loss in catalytic activity occurs when activated molecular sieve contacting the oxygenate feedstock has a methanol uptake index of at least 0.15.Type: GrantFiled: January 12, 2001Date of Patent: September 24, 2002Assignee: ExxonMobil Chemical Patents Inc.Inventors: Marcel J. G. Janssen, Cornelius W. M. Van Oorschot, Shun C. Fung, Luc R. M. Martens, Wilfried J. Mortier, Ronald G. Searle, Machteld M. Mertens, Stephen N. Vaughn
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Patent number: 6448460Abstract: This invention is directed to a molecular sieve having acid catalyst sites and a method of maintaining the acid catalyst sites of a template-containing silicoaluminophosphate molecular sieve. The method comprises providing a template-containing silicoaluminophosphate molecular sieve and heating the molecular sieve in an oxygen depleted environment under conditions effective to maintain or preserve the number of acid catalyst sites. The heated molecular sieve exhibits at least one peak in the infrared region in a range of from 3630 cm−1 to 3580 cm−1. Preferably, the heated molecular sieve exhibits a combined peak area in the 3630 cm−1 to 3580 cm−1 range of at least 10% of a total peak area of all peaks in an infrared region between 4000 cm−1 to 3400 cm−1.Type: GrantFiled: March 14, 2001Date of Patent: September 10, 2002Assignee: ExxonMobil Chemical Patents Inc.Inventors: Marcel J. G. Janssen, Machteld M. Mertens, Cornelius W. M. Van Oorschot, Stephen N. Vaughn, Hsiang-Ning Sun, David R. Lumgair
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Patent number: 6437208Abstract: Disclosed is a method for making olefin product from an oxygenate-containing feedstock. In the method, a silicoaluminophosphate molecular sieve catalyst is contacted with the oxygenate-containing feedstock in a reactor at an average catalyst feedstock exposure index of at least 1.0. The method produces lower coke yield and provides an olefin product which is low in C1-C4 paraffin content. The invention is particularly effective in producing an olefin product having a very low propane content.Type: GrantFiled: January 11, 2000Date of Patent: August 20, 2002Assignee: ExxonMobil Chemical Patents Inc.Inventors: Keith H. Kuechler, Marcel J. G. Janssen, Stephen N. Vaughn, Shun C. Fung, Nicolas P. Coute, Jeffrey Scott Smith, James R. Lattner, Jeffrey L. White, Teng Xu, William L. Kuechler, Sr., Machteld M. Mertens, Cornelius W. M. Van Oorschot