C07C1/26

LOW TEMPERATURE RADICAL INITIATOR SYSTEM AND PROCESSES MAKING USE THEREOF

The present invention refers to a process making use of a radical initiator system comprising peroxy compounds, in particular peroxyketals, in the presence of an acid catalyst to initiate radical processes at low temperature, such as room temperature and below.

METHOD FOR MAKING AN UNMODIFIED JUTE SUPPORTED CATALYST

A solid-supported Pd catalyst is suitable for CC bond formation, e.g., via Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions, with a support that is reusable, cost-efficient, regioselective, and naturally available. Such catalysts may contain Pd nanoparticles on jute plant sticks (GS), i.e., Pd@GS, and may be formed by reducing, e.g., K.sub.2PdCl.sub.4 with NaBH.sub.4 in water, and then used this as a dip catalyst. The dip catalyst can catalyze Suzuki-Miyaura and Mizoroki-Heck cross coupling-reactions in water. The catalysts may have a homogeneous distribution of Pd nanoparticles with average dimensions, e.g., within a range of 7 to 10 nm on the solid support. Suzuki-Miyaura cross-coupling reactions may achieve conversions of, e.g., 97% with TOFs around 4692 h.sup.?1, Mizoroki-Heck reactions with conversions of, e.g., a 98% and TOFs of 237 h.sup.?1, while the same catalyst sample may be used for 7 consecutive cycles, i.e., without addition of any fresh catalyst.

METHOD FOR MAKING AN UNMODIFIED JUTE SUPPORTED CATALYST

A solid-supported Pd catalyst is suitable for CC bond formation, e.g., via Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions, with a support that is reusable, cost-efficient, regioselective, and naturally available. Such catalysts may contain Pd nanoparticles on jute plant sticks (GS), i.e., Pd@GS, and may be formed by reducing, e.g., K.sub.2PdCl.sub.4 with NaBH.sub.4 in water, and then used this as a dip catalyst. The dip catalyst can catalyze Suzuki-Miyaura and Mizoroki-Heck cross coupling-reactions in water. The catalysts may have a homogeneous distribution of Pd nanoparticles with average dimensions, e.g., within a range of 7 to 10 nm on the solid support. Suzuki-Miyaura cross-coupling reactions may achieve conversions of, e.g., 97% with TOFs around 4692 h.sup.?1, Mizoroki-Heck reactions with conversions of, e.g., a 98% and TOFs of 237 h.sup.?1, while the same catalyst sample may be used for 7 consecutive cycles, i.e., without addition of any fresh catalyst.

GREEN METHOD FOR PREPARING JUTE STEM-SUPPORTED CATALYST

A solid-supported Pd catalyst is suitable for CC bond formation, e.g., via Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions, with a support that is reusable, cost-efficient, regioselective, and naturally available. Such catalysts may contain Pd nanoparticles on jute plant sticks (GS), i.e., Pd@GS, and may be formed by reducing, e.g., K.sub.2PdCl.sub.4 with NaBH.sub.4 in water, and then used this as a dip catalyst. The dip catalyst can catalyze Suzuki-Miyaura and Mizoroki-Heck cross coupling-reactions in water. The catalysts may have a homogeneous distribution of Pd nanoparticles with average dimensions, e.g., within a range of 7 to 10 nm on the solid support. Suzuki-Miyaura cross-coupling reactions may achieve conversions of, e.g., 97% with TOFs around 4692 h.sup.?1, Mizoroki-Heck reactions with conversions of, e.g., a 98% and TOFs of 237 h.sup.?1, while the same catalyst sample may be used for 7 consecutive cycles, i.e., without addition of any fresh catalyst.

GREEN METHOD FOR PREPARING JUTE STEM-SUPPORTED CATALYST

A solid-supported Pd catalyst is suitable for CC bond formation, e.g., via Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions, with a support that is reusable, cost-efficient, regioselective, and naturally available. Such catalysts may contain Pd nanoparticles on jute plant sticks (GS), i.e., Pd@GS, and may be formed by reducing, e.g., K.sub.2PdCl.sub.4 with NaBH.sub.4 in water, and then used this as a dip catalyst. The dip catalyst can catalyze Suzuki-Miyaura and Mizoroki-Heck cross coupling-reactions in water. The catalysts may have a homogeneous distribution of Pd nanoparticles with average dimensions, e.g., within a range of 7 to 10 nm on the solid support. Suzuki-Miyaura cross-coupling reactions may achieve conversions of, e.g., 97% with TOFs around 4692 h.sup.?1, Mizoroki-Heck reactions with conversions of, e.g., a 98% and TOFs of 237 h.sup.?1, while the same catalyst sample may be used for 7 consecutive cycles, i.e., without addition of any fresh catalyst.

METHOD FOR MAKING NATURAL MATERIAL-SUPPORTED PALLADIUM CATALYST

A solid-supported Pd catalyst is suitable for CC bond formation, e.g., via Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions, with a support that is reusable, cost-efficient, regioselective, and naturally available. Such catalysts may contain Pd nanoparticles on jute plant sticks (GS), i.e., Pd@GS, and may be formed by reducing, e.g., K.sub.2PdCl.sub.4 with NaBH.sub.4 in water, and then used this as a dip catalyst. The dip catalyst can catalyze Suzuki-Miyaura and Mizoroki-Heck cross coupling-reactions in water. The catalysts may have a homogeneous distribution of Pd nanoparticles with average dimensions, e.g., within a range of 7 to 10 nm on the solid support. Suzuki-Miyaura cross-coupling reactions may achieve conversions of, e.g., 97% with TOFs around 4692 h.sup.?1, Mizoroki-Heck reactions with conversions of, e.g., a 98% and TOFs of 237 h.sup.?1, while the same catalyst sample may be used for 7 consecutive cycles, i.e., without addition of any fresh catalyst.

METHOD FOR MAKING NATURAL MATERIAL-SUPPORTED PALLADIUM CATALYST

A solid-supported Pd catalyst is suitable for CC bond formation, e.g., via Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions, with a support that is reusable, cost-efficient, regioselective, and naturally available. Such catalysts may contain Pd nanoparticles on jute plant sticks (GS), i.e., Pd@GS, and may be formed by reducing, e.g., K.sub.2PdCl.sub.4 with NaBH.sub.4 in water, and then used this as a dip catalyst. The dip catalyst can catalyze Suzuki-Miyaura and Mizoroki-Heck cross coupling-reactions in water. The catalysts may have a homogeneous distribution of Pd nanoparticles with average dimensions, e.g., within a range of 7 to 10 nm on the solid support. Suzuki-Miyaura cross-coupling reactions may achieve conversions of, e.g., 97% with TOFs around 4692 h.sup.?1, Mizoroki-Heck reactions with conversions of, e.g., a 98% and TOFs of 237 h.sup.?1, while the same catalyst sample may be used for 7 consecutive cycles, i.e., without addition of any fresh catalyst.

Manufacture of ethylene from ethanol
10138174 · 2018-11-27 · ·

Ethylene is produced from ethanol in a one-step process by reacting ethanol with hydrogen chloride over a catalyst composed of silica alumina catalyst in intimate admixture with activated charcoal.

Phosphorous modified molecular sieves, their use in conversion of organics to olefins

The present invention is a phosphorous modified zeolite (A) made by a process comprising in that order: selecting a zeolite with low Si/Al ratio (advantageously lower than 30) among H.sup.+ or NH.sub.4.sup.+-form of MFI, MEL, FER, MOR, clinoptilolite, said zeolite having been made preferably without direct addition of organic template; steaming at a temperature ranging from 400 to 870 C. for 0.01-200h; leaching with an aqueous acid solution containing the source of P at conditions effective to remove a substantial part of Al from the zeolite and to introduce at least 0.3 wt % of P; separation of the solid from the liquid; an optional washing step or an optional drying step or an optional drying step followed by a washing step; a calcination step. The present invention also relates to a process (hereunder referred as XTO process) for making an olefin product from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock wherein said oxygen-containing, halogenide-containing or sulphur-containing organic feedstock is contacted with the above catalyst (in the XTO reactor) under conditions effective to convert at least a portion of the oxygen-containing, halogenide-containing or sulphur-containing organic feedstock to olefin products (the XTO reactor effluent). The present invention also relates to a process (hereunder referred as combined XTO and OCP process) to make light olefins from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock comprising: contacting said oxygen-containing, halogenide-containing or sulphur-containing organic feedstock in the XTO reactor with the above catalyst at conditions effective to convert at least a portion of the feedstock to form an XTO reactor effluent comprising light olefins and a heavy hydrocarbon fraction; separating said light olefins from said heavy hydrocarbon fraction; contacting said heavy hydrocarbon fraction in the OCP reactor at conditions effective to convert at least a portion of said heavy hydrocarbon fraction to light olefins.

Phosphorous modified molecular sieves, their use in conversion of organics to olefins

The present invention is a phosphorous modified zeolite (A) made by a process comprising in that order: selecting a zeolite with low Si/Al ratio (advantageously lower than 30) among H.sup.+ or NH.sub.4.sup.+-form of MFI, MEL, FER, MOR, clinoptilolite, said zeolite having been made preferably without direct addition of organic template; steaming at a temperature ranging from 400 to 870 C. for 0.01-200h; leaching with an aqueous acid solution containing the source of P at conditions effective to remove a substantial part of Al from the zeolite and to introduce at least 0.3 wt % of P; separation of the solid from the liquid; an optional washing step or an optional drying step or an optional drying step followed by a washing step; a calcination step. The present invention also relates to a process (hereunder referred as XTO process) for making an olefin product from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock wherein said oxygen-containing, halogenide-containing or sulphur-containing organic feedstock is contacted with the above catalyst (in the XTO reactor) under conditions effective to convert at least a portion of the oxygen-containing, halogenide-containing or sulphur-containing organic feedstock to olefin products (the XTO reactor effluent). The present invention also relates to a process (hereunder referred as combined XTO and OCP process) to make light olefins from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock comprising: contacting said oxygen-containing, halogenide-containing or sulphur-containing organic feedstock in the XTO reactor with the above catalyst at conditions effective to convert at least a portion of the feedstock to form an XTO reactor effluent comprising light olefins and a heavy hydrocarbon fraction; separating said light olefins from said heavy hydrocarbon fraction; contacting said heavy hydrocarbon fraction in the OCP reactor at conditions effective to convert at least a portion of said heavy hydrocarbon fraction to light olefins.