Unlock instant, AI-driven research and patent intelligence for your innovation.

Catalyst for preparing divinylbenzene by dehydrogenation of diethylbenzene as well as preparation method and application of catalyst

A technology for divinylbenzene and a catalyst is applied to a catalyst for producing divinylbenzene by dehydrogenation of diethylbenzene and its preparation and application fields, and can solve the problems of high ratio of mono-diene and low catalyst activity, etc.

Active Publication Date: 2018-03-13
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The diethylbenzene molecule is larger than the ethylbenzene molecule, so it is not suitable to simply use the ethylbenzene dehydrogenation catalyst for the diethylbenzene dehydrogenation reaction, the activity of the catalyst is low, and the monodiene ratio of the product is high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst for preparing divinylbenzene by dehydrogenation of diethylbenzene as well as preparation method and application of catalyst
  • Catalyst for preparing divinylbenzene by dehydrogenation of diethylbenzene as well as preparation method and application of catalyst
  • Catalyst for preparing divinylbenzene by dehydrogenation of diethylbenzene as well as preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A grain size of 80-200 nanometers is equivalent to 52.85 parts of Fe 2 o 3 Iron oxide red, the grain size is 85-230 nanometers, which is equivalent to 17.62 parts of Fe 2 o 3 Iron oxide yellow, equivalent to 12.02 parts K 2 Potassium carbonate of O, equivalent to 11.21 parts of CeO 2 of cerium oxalate, equivalent to 2.05 parts MoO 3 Ammonium molybdate, 1.52 parts of MgO, calcium hydroxide equivalent to 1.48 parts of CaO, 1.26 parts of NiO and 4.5 parts of sodium carboxymethyl cellulose were stirred in a kneader for 1.5 hours, and 24.6% of the total weight of catalyst raw materials was added to Ionized water, stirred for 0.9 hours, took out the extruded strips, extruded into particles with a diameter of 3mm and a length of 5mm, put them in an oven, baked at 55°C for 2.5 hours, and at 110°C for 8.0 hours, then placed in an atmosphere box furnace, and roasted The air flow rate was adjusted to 50 ml / min, calcined at 150° C. for 8 hours, and then calcined at 800° C. for...

Embodiment 2

[0049] Except replacing NiO with CuO, the catalyst preparation method and catalyst evaluation conditions are the same as in Example 1, specifically:

[0050] A grain size of 80-200 nanometers is equivalent to 52.85 parts of Fe 2 o 3 Iron oxide red, the grain size is 85-230 nanometers, which is equivalent to 17.62 parts of Fe 2 o 3 Iron oxide yellow, equivalent to 12.02 parts K 2 Potassium carbonate of O, equivalent to 11.21 parts of CeO 2 of cerium oxalate, equivalent to 2.05 parts MoO 3 Ammonium molybdate, 1.52 parts of MgO, calcium hydroxide equivalent to 1.48 parts of CaO, 1.26 parts of CuO and 4.5 parts of sodium carboxymethylcellulose were stirred in a kneader for 1.5 hours, and 24.6% of the total weight of the catalyst raw materials was added to Ionized water, stirred for 0.9 hours, took out the extruded strips, extruded into particles with a diameter of 3mm and a length of 5mm, put them in an oven, baked at 55°C for 2.5 hours, and at 110°C for 8.0 hours, then place...

Embodiment 3

[0053] Except replacing NiO with ZnO, catalyst preparation method and catalyst evaluation conditions are the same as embodiment 1, specifically:

[0054] The grain size of 80-200 nanometers is equivalent to 52.85 parts of Fe 2 o 3 Iron oxide red, the grain size is 85-230 nanometers, which is equivalent to 17.62 parts of Fe 2 o 3 Iron oxide yellow, equivalent to 12.02 parts K 2 Potassium carbonate of O, equivalent to 11.21 parts of CeO 2 of cerium oxalate, equivalent to 2.05 parts MoO 3 Ammonium molybdate, 1.52 parts of MgO, calcium hydroxide equivalent to 1.48 parts of CaO, 1.26 parts of ZnO and 4.5 parts of sodium carboxymethyl cellulose were stirred in a kneader for 1.5 hours, and 24.6% of the total weight of catalyst raw materials was added to Ionized water, stirred for 0.9 hours, took out the extruded strips, extruded into particles with a diameter of 3mm and a length of 5mm, put them in an oven, baked at 55°C for 2.5 hours, and at 110°C for 8.0 hours, then placed in ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a catalyst for preparing divinylbenzene and a preparation method of the catalyst. The invention mainly solves the problems that the activity of a catalyst is lower and the ratio of a monoene to a diene is high in the prior art; and the invention better solves the above technical problems through adopting the technical scheme that the catalyst used for preparing the divinylbenzene by dehydrogenation of diethylbenzene comprises the following components in percentage by weight: (a) 65-81% of Fe2O3, (b) 6-14% of K2O, (c) 8-14% of CeO2, (d) 0.5-5% of MoO3, (e) 0.5-5% of analkaline earth metal oxide, and (f) 0.1-3.0% of at least one or more selected from NiO, CuO and ZnO, wherein a raw material of the Fe2O3 is from small-grain iron oxide; and the roasting atmosphere andthe flow quantity during the preparation of the catalyst can be adjusted and controlled. The catalyst provided by the invention can be used in the industrial production of preparing the divinylbenzene by dehydrogenation of the diethylbenzene.

Description

technical field [0001] The invention relates to a catalyst for preparing divinylbenzene by dehydrogenating diethylbenzene, a preparation method and application thereof. Background technique [0002] Divinylbenzene is a very useful cross-linking agent, widely used in ion exchange resins, ion exchange membranes, ABS resins, polystyrene resins, unsaturated polyester resins, synthetic rubber, special plastics, coatings, adhesives and other fields . [0003] There are many ways to prepare divinylbenzene, but the most suitable method for industrial production is to obtain it by dehydrogenating diethylbenzene under the action of a catalyst. For the industrial catalytic process of diethylbenzene dehydrogenation to divinylbenzene, the catalyst plays a key role, and the quality of the catalyst determines the economics of the dehydrogenation process. The diethylbenzene dehydrogenation catalyst is similar to the ethylbenzene dehydrogenation catalyst system, and the zinc-based and magn...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/887C07C5/333C07C15/46
CPCB01J23/002B01J23/8872B01J2523/00C07C5/3332C07C2523/887C07C15/46B01J2523/13B01J2523/22B01J2523/23B01J2523/3712B01J2523/68B01J2523/842B01J2523/17B01J2523/847B01J2523/27B01J2523/47
Inventor 危春玲缪长喜宋磊朱敏倪军平
Owner CHINA PETROLEUM & CHEM CORP